320323031020 has 48 divisors (see below), whose sum is σ = 686841180480. Its totient is φ = 125459490816.

The previous prime is 320323030997. The next prime is 320323031023. The reversal of 320323031020 is 20130323023.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (320323031023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 690237 + ... + 1056916.

It is an arithmetic number, because the mean of its divisors is an integer number (14309191260).

Almost surely, 2^320323031020 is an apocalyptic number.

It is an amenable number.

320323031020 is an abundant number, since it is smaller than the sum of its proper divisors (366518149460).

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

320323031020 is a wasteful number, since it uses less digits than its factorization.

320323031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747354 (or 1747352 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 320323031020 its reverse (20130323023), we get a palindrome (340453354043).

The spelling of 320323031020 in words is "three hundred twenty billion, three hundred twenty-three million, thirty-one thousand, twenty".