31374644 has 24 divisors (see below), whose sum is σ = 63215040. Its totient is φ = 13346496.

The previous prime is 31374617. The next prime is 31374653. The reversal of 31374644 is 44647313.

It is a super-2 number, since 2×31374644² = 1968736572253472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 31374644.

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, 254 + ... + 7925.

It is an arithmetic number, because the mean of its divisors is an integer number (2633960).

Almost surely, 2^31374644 is an apocalyptic number.

It is an amenable number.

31374644 is an abundant number, since it is smaller than the sum of its proper divisors (31840396).

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

31374644 is a wasteful number, since it uses less digits than its factorization.

31374644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8327 (or 8325 counting only the distinct ones).

The product of its digits is 24192, while the sum is 32.

The square root of 31374644 is about 5601.3073473967. The cubic root of 31374644 is about 315.3984845226.

The spelling of 31374644 in words is "thirty-one million, three hundred seventy-four thousand, six hundred forty-four".