311979612 has 24 divisors (see below), whose sum is σ = 831945856. Its totient is φ = 89137008.

The previous prime is 311979587. The next prime is 311979667. The reversal of 311979612 is 216979113.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1856938 + ... + 1857105.

Almost surely, 2^311979612 is an apocalyptic number.

It is an amenable number.

311979612 is an abundant number, since it is smaller than the sum of its proper divisors (519966244).

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

311979612 is a wasteful number, since it uses less digits than its factorization.

311979612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3714057 (or 3714055 counting only the distinct ones).

The product of its digits is 20412, while the sum is 39.

The square root of 311979612 is about 17662.9446016229. The cubic root of 311979612 is about 678.2275147727.

The spelling of 311979612 in words is "three hundred eleven million, nine hundred seventy-nine thousand, six hundred twelve".