31345717012 has 24 divisors (see below), whose sum is σ = 56331797760. Its totient is φ = 15256506720.

The previous prime is 31345716977. The next prime is 31345717031. The reversal of 31345717012 is 21071754313.

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, 676123 + ... + 720994.

It is an arithmetic number, because the mean of its divisors is an integer number (2347158240).

Almost surely, 2^31345717012 is an apocalyptic number.

It is an amenable number.

31345717012 is a deficient number, since it is larger than the sum of its proper divisors (24986080748).

31345717012 is a wasteful number, since it uses less digits than its factorization.

31345717012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397271 (or 1397269 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The spelling of 31345717012 in words is "thirty-one billion, three hundred forty-five million, seven hundred seventeen thousand, twelve".