31325504320 has 112 divisors (see below), whose sum is σ = 81438146496. Its totient is φ = 11382272000.

The previous prime is 31325504317. The next prime is 31325504339. The reversal of 31325504320 is 2340552313.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6055335 + ... + 6060505.

It is an arithmetic number, because the mean of its divisors is an integer number (727126308).

Almost surely, 2^31325504320 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 31325504320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40719073248).

31325504320 is an abundant number, since it is smaller than the sum of its proper divisors (50112642176).

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

31325504320 is a wasteful number, since it uses less digits than its factorization.

31325504320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6920 (or 6910 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 28.

The spelling of 31325504320 in words is "thirty-one billion, three hundred twenty-five million, five hundred four thousand, three hundred twenty".