31946972 has 6 divisors (see below), whose sum is σ = 55907208. Its totient is φ = 15973484.

The previous prime is 31946939. The next prime is 31946989. The reversal of 31946972 is 27964913.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3993368 + ... + 3993375.

It is an arithmetic number, because the mean of its divisors is an integer number (9317868).

Almost surely, 2^31946972 is an apocalyptic number.

It is an amenable number.

31946972 is a deficient number, since it is larger than the sum of its proper divisors (23960236).

31946972 is a wasteful number, since it uses less digits than its factorization.

31946972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7986747 (or 7986745 counting only the distinct ones).

The product of its digits is 81648, while the sum is 41.

The square root of 31946972 is about 5652.1652488228. The cubic root of 31946972 is about 317.3047453042.

The spelling of 31946972 in words is "thirty-one million, nine hundred forty-six thousand, nine hundred seventy-two".