331310121020 has 48 divisors (see below), whose sum is σ = 711099648000. Its totient is φ = 129623123520.

The previous prime is 331310121001. The next prime is 331310121031. The reversal of 331310121020 is 20121013133.

It is a self number, because there is not a number n which added to its sum of digits gives 331310121020.

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, 470636 + ... + 940275.

It is an arithmetic number, because the mean of its divisors is an integer number (14814576000).

Almost surely, 2^331310121020 is an apocalyptic number.

It is an amenable number.

331310121020 is an abundant number, since it is smaller than the sum of its proper divisors (379789526980).

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

331310121020 is a wasteful number, since it uses less digits than its factorization.

331310121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411178 (or 1411176 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 331310121020 its reverse (20121013133), we get a palindrome (351431134153).

The spelling of 331310121020 in words is "three hundred thirty-one billion, three hundred ten million, one hundred twenty-one thousand, twenty".