31997296264 has 32 divisors (see below), whose sum is σ = 60991509600. Its totient is φ = 15735047040.

The previous prime is 31997296223. The next prime is 31997296273. The reversal of 31997296264 is 46269279913.

It is a junction number, because it is equal to n+sod(n) for n = 31997296199 and 31997296208.

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, 15477 + ... + 253444.

It is an arithmetic number, because the mean of its divisors is an integer number (1905984675).

Almost surely, 2^31997296264 is an apocalyptic number.

It is an amenable number.

31997296264 is a deficient number, since it is larger than the sum of its proper divisors (28994213336).

31997296264 is a wasteful number, since it uses less digits than its factorization.

31997296264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269173 (or 269169 counting only the distinct ones).

The product of its digits is 8817984, while the sum is 58.

The spelling of 31997296264 in words is "thirty-one billion, nine hundred ninety-seven million, two hundred ninety-six thousand, two hundred sixty-four".