31712372 has 12 divisors (see below), whose sum is σ = 55536096. Its totient is φ = 15844920.

The previous prime is 31712347. The next prime is 31712389. The reversal of 31712372 is 27321713.

It is a congruent number.

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, 9473 + ... + 12375.

It is an arithmetic number, because the mean of its divisors is an integer number (4628008).

Almost surely, 2^31712372 is an apocalyptic number.

It is an amenable number.

31712372 is a deficient number, since it is larger than the sum of its proper divisors (23823724).

31712372 is a wasteful number, since it uses less digits than its factorization.

31712372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5638 (or 5636 counting only the distinct ones).

The product of its digits is 1764, while the sum is 26.

The square root of 31712372 is about 5631.3738998578. The cubic root of 31712372 is about 316.5261357359.

The spelling of 31712372 in words is "thirty-one million, seven hundred twelve thousand, three hundred seventy-two".