320420204304 has 80 divisors (see below), whose sum is σ = 888787935360. Its totient is φ = 99108136960.

The previous prime is 320420204261. The next prime is 320420204317. The reversal of 320420204304 is 403402024023.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 2707359 + ... + 2823230.

It is an arithmetic number, because the mean of its divisors is an integer number (11109849192).

Almost surely, 2^320420204304 is an apocalyptic number.

320420204304 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

320420204304 is an abundant number, since it is smaller than the sum of its proper divisors (568367731056).

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

320420204304 is a wasteful number, since it uses less digits than its factorization.

320420204304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5530688 (or 5530682 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 320420204304 its reverse (403402024023), we get a palindrome (723822228327).

The spelling of 320420204304 in words is "three hundred twenty billion, four hundred twenty million, two hundred four thousand, three hundred four".