31797964 has 24 divisors (see below), whose sum is σ = 61443648. Its totient is φ = 14277840.

The previous prime is 31797947. The next prime is 31797977. The reversal of 31797964 is 46979713.

It is a super-2 number, since 2×31797964² = 2022221029090592, which contains 22 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 7 ways as a sum of consecutive naturals, for example, 702 + ... + 8005.

It is an arithmetic number, because the mean of its divisors is an integer number (2560152).

Almost surely, 2^31797964 is an apocalyptic number.

It is an amenable number.

31797964 is a deficient number, since it is larger than the sum of its proper divisors (29645684).

31797964 is a wasteful number, since it uses less digits than its factorization.

31797964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8805 (or 8803 counting only the distinct ones).

The product of its digits is 285768, while the sum is 46.

The square root of 31797964 is about 5638.9683453625. The cubic root of 31797964 is about 316.8106489593.

It can be divided in two parts, 31797 and 964, that added together give a square (32761 = 181²).

The spelling of 31797964 in words is "thirty-one million, seven hundred ninety-seven thousand, nine hundred sixty-four".