31664152 has 32 divisors (see below), whose sum is σ = 64244880. Its totient is φ = 14544000.

The previous prime is 31664071. The next prime is 31664167. The reversal of 31664152 is 25146613.

It is a self number, because there is not a number n which added to its sum of digits gives 31664152.

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, 25498 + ... + 26710.

Almost surely, 2^31664152 is an apocalyptic number.

It is an amenable number.

31664152 is an abundant number, since it is smaller than the sum of its proper divisors (32580728).

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

31664152 is a wasteful number, since it uses less digits than its factorization.

31664152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483 (or 1479 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 31664152 is about 5627.0909002788. The cubic root of 31664152 is about 316.3656239040.

The spelling of 31664152 in words is "thirty-one million, six hundred sixty-four thousand, one hundred fifty-two".