31917602964 has 120 divisors (see below), whose sum is σ = 84209025600. Its totient is φ = 9391489536.

The previous prime is 31917602963. The next prime is 31917602993. The reversal of 31917602964 is 46920671913.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31917602963) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7880812 + ... + 7884860.

It is an arithmetic number, because the mean of its divisors is an integer number (701741880).

Almost surely, 2^31917602964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31917602964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42104512800).

31917602964 is an abundant number, since it is smaller than the sum of its proper divisors (52291422636).

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

31917602964 is a wasteful number, since it uses less digits than its factorization.

31917602964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4131 (or 4090 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 48.

The spelling of 31917602964 in words is "thirty-one billion, nine hundred seventeen million, six hundred two thousand, nine hundred sixty-four".