31342864 has 20 divisors (see below), whose sum is σ = 69402304. Its totient is φ = 13432608.

The previous prime is 31342853. The next prime is 31342877. The reversal of 31342864 is 46824313.

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, 139812 + ... + 140035.

Almost surely, 2^31342864 is an apocalyptic number.

It is an amenable number.

31342864 is an abundant number, since it is smaller than the sum of its proper divisors (38059440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31342864 is a wasteful number, since it uses less digits than its factorization.

31342864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279862 (or 279856 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 31342864 is about 5598.4697909339. The cubic root of 31342864 is about 315.2919574171.

The spelling of 31342864 in words is "thirty-one million, three hundred forty-two thousand, eight hundred sixty-four".