31296881612 has 36 divisors (see below), whose sum is σ = 59049310824. Its totient is φ = 14508088320.

The previous prime is 31296881597. The next prime is 31296881621. The reversal of 31296881612 is 21618869213.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124589 + ... + 279492.

It is an arithmetic number, because the mean of its divisors is an integer number (1640258634).

Almost surely, 2^31296881612 is an apocalyptic number.

It is an amenable number.

31296881612 is a deficient number, since it is larger than the sum of its proper divisors (27752429212).

31296881612 is a wasteful number, since it uses less digits than its factorization.

31296881612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404186 (or 404167 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The spelling of 31296881612 in words is "thirty-one billion, two hundred ninety-six million, eight hundred eighty-one thousand, six hundred twelve".