331320533128 has 32 divisors (see below), whose sum is σ = 678997892160. Its totient is φ = 150634820160.

The previous prime is 331320533099. The next prime is 331320533129. The reversal of 331320533128 is 821335023133.

It is a junction number, because it is equal to n+sod(n) for n = 331320533093 and 331320533102.

It is not an unprimeable number, because it can be changed into a prime (331320533129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23767468 + ... + 23781403.

It is an arithmetic number, because the mean of its divisors is an integer number (21218684130).

Almost surely, 2^331320533128 is an apocalyptic number.

It is an amenable number.

331320533128 is an abundant number, since it is smaller than the sum of its proper divisors (347677359032).

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

331320533128 is a wasteful number, since it uses less digits than its factorization.

331320533128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47548957 (or 47548953 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The spelling of 331320533128 in words is "three hundred thirty-one billion, three hundred twenty million, five hundred thirty-three thousand, one hundred twenty-eight".