31974680 has 32 divisors (see below), whose sum is σ = 72111600. Its totient is φ = 12759936.

The previous prime is 31974673. The next prime is 31974689. The reversal of 31974680 is 8647913.

It is a super-2 number, since 2×31974680² = 2044760322204800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31974689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25754 + ... + 26966.

Almost surely, 2^31974680 is an apocalyptic number.

It is an amenable number.

31974680 is an abundant number, since it is smaller than the sum of its proper divisors (40136920).

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

31974680 is a wasteful number, since it uses less digits than its factorization.

31974680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1883 (or 1879 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 31974680 is about 5654.6158136517. The cubic root of 31974680 is about 317.3964528932.

The spelling of 31974680 in words is "thirty-one million, nine hundred seventy-four thousand, six hundred eighty".