31930988 has 12 divisors (see below), whose sum is σ = 56306712. Its totient is φ = 15843360.

The previous prime is 31930979. The next prime is 31931027. The reversal of 31930988 is 88903913.

It is a super-2 number, since 2×31930988² = 2039175989312288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29945 + ... + 30992.

It is an arithmetic number, because the mean of its divisors is an integer number (4692226).

Almost surely, 2^31930988 is an apocalyptic number.

It is an amenable number.

31930988 is a deficient number, since it is larger than the sum of its proper divisors (24375724).

31930988 is a wasteful number, since it uses less digits than its factorization.

31930988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61072 (or 61070 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 31930988 is about 5650.7511005175. The cubic root of 31930988 is about 317.2518175427.

The spelling of 31930988 in words is "thirty-one million, nine hundred thirty thousand, nine hundred eighty-eight".