| Base | Representation |
|---|---|
| bin | 1011100011000110… |
| … | …1011100011110100 |
| 3 | 22000001020220101010 |
| 4 | 2320301223203310 |
| 5 | 22322101444340 |
| 6 | 1231340232220 |
| 7 | 136551554616 |
| oct | 27061534364 |
| 9 | 8001226333 |
| 10 | 3100031220 |
| 11 | 1350983380 |
| 12 | 72623b670 |
| 13 | 3a5339300 |
| 14 | 215a04db6 |
| 15 | 132252b80 |
| hex | b8c6b8f4 |
3100031220 has 144 divisors (see below), whose sum is σ = 10253984832. Its totient is φ = 693688320.
The previous prime is 3100031173. The next prime is 3100031257. The reversal of 3100031220 is 221300013.
It is a happy number.
It is a super-2 number, since 2×31000312202 = 19220387129949376800, which contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a junction number, because it is equal to n+sod(n) for n = 3100031196 and 3100031205.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 97644 + ... + 125436.
It is an arithmetic number, because the mean of its divisors is an integer number (71208228).
Almost surely, 23100031220 is an apocalyptic number.
3100031220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 3100031220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5126992416).
3100031220 is an abundant number, since it is smaller than the sum of its proper divisors (7153953612).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3100031220 is a wasteful number, since it uses less digits than its factorization.
3100031220 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 27842 (or 27827 counting only the distinct ones).
The product of its (nonzero) digits is 36, while the sum is 12.
The square root of 3100031220 is about 55677.9239914708. The cubic root of 3100031220 is about 1458.1046306354.
Adding to 3100031220 its reverse (221300013), we get a palindrome (3321331233).
The spelling of 3100031220 in words is "three billion, one hundred million, thirty-one thousand, two hundred twenty".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.000 sec. • engine limits •