331344521020 has 12 divisors (see below), whose sum is σ = 695823494184. Its totient is φ = 132537808400.

The previous prime is 331344521017. The next prime is 331344521033. The reversal of 331344521020 is 20125443133.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 331344521020.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8283613006 + ... + 8283613045.

It is an arithmetic number, because the mean of its divisors is an integer number (57985291182).

Almost surely, 2^331344521020 is an apocalyptic number.

It is an amenable number.

331344521020 is an abundant number, since it is smaller than the sum of its proper divisors (364478973164).

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

331344521020 is a wasteful number, since it uses less digits than its factorization.

331344521020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16567226060 (or 16567226058 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 331344521020 its reverse (20125443133), we get a palindrome (351469964153).

The spelling of 331344521020 in words is "three hundred thirty-one billion, three hundred forty-four million, five hundred twenty-one thousand, twenty".