31230864 has 60 divisors (see below), whose sum is σ = 99892416. Its totient is φ = 8922816.

The previous prime is 31230821. The next prime is 31230929. The reversal of 31230864 is 46803213.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14484 + ... + 16499.

Almost surely, 2^31230864 is an apocalyptic number.

It is an amenable number.

31230864 is an abundant number, since it is smaller than the sum of its proper divisors (68661552).

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

31230864 is a wasteful number, since it uses less digits than its factorization.

31230864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31004 (or 30995 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 31230864 is about 5588.4581057748. The cubic root of 31230864 is about 314.9159564147.

The spelling of 31230864 in words is "thirty-one million, two hundred thirty thousand, eight hundred sixty-four".