31979212 has 6 divisors (see below), whose sum is σ = 55963628. Its totient is φ = 15989604.

The previous prime is 31979209. The next prime is 31979237. The reversal of 31979212 is 21297913.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3997398 + ... + 3997405.

Almost surely, 2^31979212 is an apocalyptic number.

It is an amenable number.

31979212 is a deficient number, since it is larger than the sum of its proper divisors (23984416).

31979212 is a wasteful number, since it uses less digits than its factorization.

31979212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7994807 (or 7994805 counting only the distinct ones).

The product of its digits is 6804, while the sum is 34.

The square root of 31979212 is about 5655.0165340165. The cubic root of 31979212 is about 317.4114478076.

The spelling of 31979212 in words is "thirty-one million, nine hundred seventy-nine thousand, two hundred twelve".