Base | Representation |
---|---|
bin | 111011111101… |
… | …1110011100110 |
3 | 2012011022201020 |
4 | 1313323303212 |
5 | 31022040402 |
6 | 3041512010 |
7 | 531144051 |
oct | 167736346 |
9 | 65138636 |
10 | 31440102 |
11 | 16824461 |
12 | a642606 |
13 | 668a615 |
14 | 4265a98 |
15 | 2b608bc |
hex | 1dfbce6 |
31440102 has 8 divisors (see below), whose sum is σ = 62880216. Its totient is φ = 10480032.
The previous prime is 31440083. The next prime is 31440109. The reversal of 31440102 is 20104413.
It is a sphenic number, since it is the product of 3 distinct primes.
31440102 is an admirable number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (31440109) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2620003 + ... + 2620014.
It is an arithmetic number, because the mean of its divisors is an integer number (7860027).
Almost surely, 231440102 is an apocalyptic number.
31440102 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31440102 is a wasteful number, since it uses less digits than its factorization.
31440102 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5240022.
The product of its (nonzero) digits is 96, while the sum is 15.
The square root of 31440102 is about 5607.1474030919. The cubic root of 31440102 is about 315.6176743978.
Adding to 31440102 its reverse (20104413), we get a palindrome (51544515).
The spelling of 31440102 in words is "thirty-one million, four hundred forty thousand, one hundred two".
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