320013031200 has 72 divisors (see below), whose sum is σ = 1041642424368. Its totient is φ = 85336807680.

The previous prime is 320013031157. The next prime is 320013031211. The reversal of 320013031200 is 2130310023.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 320013031200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66666982 + ... + 66671781.

It is an arithmetic number, because the mean of its divisors is an integer number (14467255894).

Almost surely, 2^320013031200 is an apocalyptic number.

320013031200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320013031200 is an abundant number, since it is smaller than the sum of its proper divisors (721629393168).

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

320013031200 is a wasteful number, since it uses less digits than its factorization.

320013031200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133338786 (or 133338773 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 320013031200 its reverse (2130310023), we get a palindrome (322143341223).

The spelling of 320013031200 in words is "three hundred twenty billion, thirteen million, thirty-one thousand, two hundred".