31864484 has 12 divisors (see below), whose sum is σ = 56708400. Its totient is φ = 15662088.

The previous prime is 31864471. The next prime is 31864489. The reversal of 31864484 is 48446813.

It is not an unprimeable number, because it can be changed into a prime (31864489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67274 + ... + 67745.

It is an arithmetic number, because the mean of its divisors is an integer number (4725700).

Almost surely, 2^31864484 is an apocalyptic number.

It is an amenable number.

31864484 is a deficient number, since it is larger than the sum of its proper divisors (24843916).

31864484 is a wasteful number, since it uses less digits than its factorization.

31864484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135082 (or 135080 counting only the distinct ones).

The product of its digits is 73728, while the sum is 38.

The square root of 31864484 is about 5644.8635058786. The cubic root of 31864484 is about 317.0314132609.

The spelling of 31864484 in words is "thirty-one million, eight hundred sixty-four thousand, four hundred eighty-four".