31948764 has 24 divisors (see below), whose sum is σ = 74887680. Its totient is φ = 10600944.

The previous prime is 31948759. The next prime is 31948783. The reversal of 31948764 is 46784913.

It is a super-2 number, since 2×31948764² = 2041447042255392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3294 + ... + 8645.

It is an arithmetic number, because the mean of its divisors is an integer number (3120320).

Almost surely, 2^31948764 is an apocalyptic number.

It is an amenable number.

31948764 is an abundant number, since it is smaller than the sum of its proper divisors (42938916).

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

31948764 is a wasteful number, since it uses less digits than its factorization.

31948764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12169 (or 12167 counting only the distinct ones).

The product of its digits is 145152, while the sum is 42.

The square root of 31948764 is about 5652.3237699198. The cubic root of 31948764 is about 317.3106780466.

The spelling of 31948764 in words is "thirty-one million, nine hundred forty-eight thousand, seven hundred sixty-four".