306931512168 has 40 divisors (see below), whose sum is σ = 859692431730. Its totient is φ = 102310503840.

The previous prime is 306931512143. The next prime is 306931512169. The reversal of 306931512168 is 861215139603.

306931512168 is a `hidden beast` number, since 30 + 6 + 93 + 1 + 512 + 16 + 8 = 666.

306931512168 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 219884090724 + 87047421444 = 468918^2 + 295038^2 .

It is not an unprimeable number, because it can be changed into a prime (306931512169) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 236829223 + ... + 236830518.

Almost surely, 2^306931512168 is an apocalyptic number.

It is an amenable number.

306931512168 is an abundant number, since it is smaller than the sum of its proper divisors (552760919562).

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

306931512168 is a wasteful number, since it uses less digits than its factorization.

306931512168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 473659759 (or 473659746 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 306931512168 in words is "three hundred six billion, nine hundred thirty-one million, five hundred twelve thousand, one hundred sixty-eight".