31389000968 has 16 divisors (see below), whose sum is σ = 63381636780. Its totient is φ = 14487231168.

The previous prime is 31389000941. The next prime is 31389000997. The reversal of 31389000968 is 86900098313.

It can be written as a sum of positive squares in 2 ways, for example, as 28156168804 + 3232832164 = 167798^2 + 56858^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 150908555 + ... + 150908762.

Almost surely, 2^31389000968 is an apocalyptic number.

It is an amenable number.

31389000968 is an abundant number, since it is smaller than the sum of its proper divisors (31992635812).

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

31389000968 is a wasteful number, since it uses less digits than its factorization.

31389000968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301817336 (or 301817332 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 31389000968 in words is "thirty-one billion, three hundred eighty-nine million, nine hundred sixty-eight", and thus it is an aban number.