31216374064 has 40 divisors (see below), whose sum is σ = 64380366000. Its totient is φ = 14620548096.

The previous prime is 31216374031. The next prime is 31216374071. The reversal of 31216374064 is 46047361213.

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, 549829 + ... + 603940.

It is an arithmetic number, because the mean of its divisors is an integer number (1609509150).

Almost surely, 2^31216374064 is an apocalyptic number.

It is an amenable number.

31216374064 is an abundant number, since it is smaller than the sum of its proper divisors (33163991936).

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

31216374064 is a wasteful number, since it uses less digits than its factorization.

31216374064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153885 (or 1153879 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 31216374064 in words is "thirty-one billion, two hundred sixteen million, three hundred seventy-four thousand, sixty-four".