31982164 has 24 divisors (see below), whose sum is σ = 56929320. Its totient is φ = 15719424.

The previous prime is 31982147. The next prime is 31982183. The reversal of 31982164 is 46128913.

It can be written as a sum of positive squares in 4 ways, for example, as 8749764 + 23232400 = 2958^2 + 4820^2 .

It is a congruent number.

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, 77992 + ... + 78400.

It is an arithmetic number, because the mean of its divisors is an integer number (2372055).

Almost surely, 2^31982164 is an apocalyptic number.

It is an amenable number.

31982164 is a deficient number, since it is larger than the sum of its proper divisors (24947156).

31982164 is a wasteful number, since it uses less digits than its factorization.

31982164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699 (or 697 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 31982164 is about 5655.2775351878. The cubic root of 31982164 is about 317.4212142539.

The spelling of 31982164 in words is "thirty-one million, nine hundred eighty-two thousand, one hundred sixty-four".