31669116 has 12 divisors (see below), whose sum is σ = 73894632. Its totient is φ = 10556368.

The previous prime is 31669103. The next prime is 31669139. The reversal of 31669116 is 61196613.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1319535 + ... + 1319558.

It is an arithmetic number, because the mean of its divisors is an integer number (6157886).

Almost surely, 2^31669116 is an apocalyptic number.

It is an amenable number.

31669116 is an abundant number, since it is smaller than the sum of its proper divisors (42225516).

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

31669116 is a wasteful number, since it uses less digits than its factorization.

31669116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2639100 (or 2639098 counting only the distinct ones).

The product of its digits is 5832, while the sum is 33.

The square root of 31669116 is about 5627.5319634810. The cubic root of 31669116 is about 316.3821552894.

The spelling of 31669116 in words is "thirty-one million, six hundred sixty-nine thousand, one hundred sixteen".