331321611328 has 112 divisors (see below), whose sum is σ = 687894488064. Its totient is φ = 158182778880.

The previous prime is 331321611311. The next prime is 331321611343. The reversal of 331321611328 is 823116123133.

It is a junction number, because it is equal to n+sod(n) for n = 331321611293 and 331321611302.

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, 37488126 + ... + 37496962.

It is an arithmetic number, because the mean of its divisors is an integer number (6141915072).

Almost surely, 2^331321611328 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 331321611328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343947244032).

331321611328 is an abundant number, since it is smaller than the sum of its proper divisors (356572876736).

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

331321611328 is a wasteful number, since it uses less digits than its factorization.

331321611328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9180 (or 9170 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The spelling of 331321611328 in words is "three hundred thirty-one billion, three hundred twenty-one million, six hundred eleven thousand, three hundred twenty-eight".