31382472 has 32 divisors (see below), whose sum is σ = 85589280. Its totient is φ = 9509760.

The previous prime is 31382443. The next prime is 31382489. The reversal of 31382472 is 27428313.

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, 59173 + ... + 59700.

It is an arithmetic number, because the mean of its divisors is an integer number (2674665).

Almost surely, 2^31382472 is an apocalyptic number.

It is an amenable number.

31382472 is an abundant number, since it is smaller than the sum of its proper divisors (54206808).

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

31382472 is a wasteful number, since it uses less digits than its factorization.

31382472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118893 (or 118889 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 31382472 is about 5602.0060692577. The cubic root of 31382472 is about 315.4247130702.

The spelling of 31382472 in words is "thirty-one million, three hundred eighty-two thousand, four hundred seventy-two".