31299992064 has 480 divisors, whose sum is σ = 102585719808. Its totient is φ = 9105408000.

The previous prime is 31299992039. The next prime is 31299992069. The reversal of 31299992064 is 46029999213.

It is a self number, because there is not a number n which added to its sum of digits gives 31299992064.

It is not an unprimeable number, because it can be changed into a prime (31299992069) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163874209 + ... + 163874399.

Almost surely, 2^31299992064 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 31299992064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51292859904).

31299992064 is an abundant number, since it is smaller than the sum of its proper divisors (71285727744).

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

31299992064 is a wasteful number, since it uses less digits than its factorization.

31299992064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The spelling of 31299992064 in words is "thirty-one billion, two hundred ninety-nine million, nine hundred ninety-two thousand, sixty-four".