31680964 has 12 divisors (see below), whose sum is σ = 63361984. Its totient is φ = 13577544.

The previous prime is 31680931. The next prime is 31681007. The reversal of 31680964 is 46908613.

31680964 is an admirable number.

It is a super-4 number, since 4×31680964⁴ (a number of 31 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565704 + ... + 565759.

Almost surely, 2^31680964 is an apocalyptic number.

It is an amenable number.

31680964 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.

31680964 is a wasteful number, since it uses less digits than its factorization.

31680964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131474 (or 1131472 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 31680964 is about 5628.5845467577. The cubic root of 31680964 is about 316.4216051687.

The spelling of 31680964 in words is "thirty-one million, six hundred eighty thousand, nine hundred sixty-four".