31668774 has 16 divisors (see below), whose sum is σ = 63404208. Its totient is φ = 10545152.

The previous prime is 31668761. The next prime is 31668803. The reversal of 31668774 is 47786613.

It is a super-2 number, since 2×31668774² = 2005822493326152, 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5134 + ... + 9470.

It is an arithmetic number, because the mean of its divisors is an integer number (3962763).

Almost surely, 2^31668774 is an apocalyptic number.

31668774 is an abundant number, since it is smaller than the sum of its proper divisors (31735434).

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

31668774 is a wasteful number, since it uses less digits than its factorization.

31668774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5559.

The product of its digits is 169344, while the sum is 42.

The square root of 31668774 is about 5627.5015770766. The cubic root of 31668774 is about 316.3810163977.

The spelling of 31668774 in words is "thirty-one million, six hundred sixty-eight thousand, seven hundred seventy-four".