Base | Representation |
---|---|
bin | 111011011111… |
… | …1100011100100 |
3 | 2011200210012000 |
4 | 1312333203210 |
5 | 30441141231 |
6 | 3032325300 |
7 | 526065420 |
oct | 166774344 |
9 | 64623160 |
10 | 31193316 |
11 | 16676000 |
12 | a543830 |
13 | 66021ab |
14 | 41ddb80 |
15 | 2b126e6 |
hex | 1dbf8e4 |
31193316 has 192 divisors, whose sum is σ = 104939520. Its totient is φ = 7840800.
The previous prime is 31193303. The next prime is 31193321. The reversal of 31193316 is 61339113.
It is a Harshad number since it is a multiple of its sum of digits (27).
It is a nude number because it is divisible by every one of its digits.
Its product of digits (1458) is a multiple of the sum of its prime divisors (54).
It is a self number, because there is not a number n which added to its sum of digits gives 31193316.
It is an unprimeable number.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1006221 + ... + 1006251.
It is an arithmetic number, because the mean of its divisors is an integer number (546560).
It is a self-describing number.
Almost surely, 231193316 is an apocalyptic number.
31193316 is a gapful number since it is divisible by the number (36) 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 31193316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52469760).
31193316 is an abundant number, since it is smaller than the sum of its proper divisors (73746204).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31193316 is a wasteful number, since it uses less digits than its factorization.
31193316 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 84 (or 54 counting only the distinct ones).
The product of its digits is 1458, while the sum is 27.
The square root of 31193316 is about 5585.0976714826. The cubic root of 31193316 is about 314.7897009020.
The spelling of 31193316 in words is "thirty-one million, one hundred ninety-three thousand, three hundred sixteen".
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