31057968 has 40 divisors (see below), whose sum is σ = 80606448. Its totient is φ = 10304512.

The previous prime is 31057931. The next prime is 31057973. The reversal of 31057968 is 86975013.

It is a super-3 number, since 3×31057968³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9796 + ... + 12572.

Almost surely, 2^31057968 is an apocalyptic number.

It is an amenable number.

31057968 is an abundant number, since it is smaller than the sum of its proper divisors (49548480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31057968 is a wasteful number, since it uses less digits than its factorization.

31057968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3021 (or 3015 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 31057968 is about 5572.9676116051. The cubic root of 31057968 is about 314.3337492893. Note that the first 3 decimals are identical.

The spelling of 31057968 in words is "thirty-one million, fifty-seven thousand, nine hundred sixty-eight".