31312001612 has 12 divisors (see below), whose sum is σ = 56070328776. Its totient is φ = 15291907680.

The previous prime is 31312001587. The next prime is 31312001621. The reversal of 31312001612 is 21610021313.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91023089 + ... + 91023432.

It is an arithmetic number, because the mean of its divisors is an integer number (4672527398).

Almost surely, 2^31312001612 is an apocalyptic number.

It is an amenable number.

31312001612 is a deficient number, since it is larger than the sum of its proper divisors (24758327164).

31312001612 is a wasteful number, since it uses less digits than its factorization.

31312001612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182046568 (or 182046566 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31312001612 its reverse (21610021313), we get a palindrome (52922022925).

The spelling of 31312001612 in words is "thirty-one billion, three hundred twelve million, one thousand, six hundred twelve".