320031223311020 has 72 divisors (see below), whose sum is σ = 727746165483120. Its totient is φ = 118164315160320.

The previous prime is 320031223310999. The next prime is 320031223311043. The reversal of 320031223311020 is 20113322130023.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 446000930 + ... + 446717910.

It is an arithmetic number, because the mean of its divisors is an integer number (10107585631710).

Almost surely, 2^{320031223311020} is an apocalyptic number.

It is an amenable number.

320031223311020 is an abundant number, since it is smaller than the sum of its proper divisors (407714942172100).

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

320031223311020 is a wasteful number, since it uses less digits than its factorization.

320031223311020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849075 (or 849060 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 320031223311020 its reverse (20113322130023), we get a palindrome (340144545441043).

The spelling of 320031223311020 in words is "three hundred twenty trillion, thirty-one billion, two hundred twenty-three million, three hundred eleven thousand, twenty".