31125984 has 48 divisors (see below), whose sum is σ = 84349440. Its totient is φ = 10039680.

The previous prime is 31125973. The next prime is 31126001. The reversal of 31125984 is 48952113.

It is a tau number, because it is divible by the number of its divisors (48).

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, 2254 + ... + 8205.

It is an arithmetic number, because the mean of its divisors is an integer number (1757280).

Almost surely, 2^31125984 is an apocalyptic number.

It is an amenable number.

31125984 is an abundant number, since it is smaller than the sum of its proper divisors (53223456).

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

31125984 is a wasteful number, since it uses less digits than its factorization.

31125984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10503 (or 10495 counting only the distinct ones).

The product of its digits is 8640, while the sum is 33.

The square root of 31125984 is about 5579.0665885971. The cubic root of 31125984 is about 314.5630424213.

The spelling of 31125984 in words is "thirty-one million, one hundred twenty-five thousand, nine hundred eighty-four".