320321031000 has 64 divisors (see below), whose sum is σ = 999401626080. Its totient is φ = 85418940800.

The previous prime is 320321030999. The next prime is 320321031091. The reversal of 320321031000 is 130123023.

It is a super-2 number, since 2×320321031000² (a number of 24 digits) contains 22 as substring.

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

It is a congruent number.

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, 53383839 + ... + 53389838.

Almost surely, 2^320321031000 is an apocalyptic number.

320321031000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320321031000 is an abundant number, since it is smaller than the sum of its proper divisors (679080595080).

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

320321031000 is a wasteful number, since it uses less digits than its factorization.

320321031000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106773701 (or 106773687 counting only the distinct ones).

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

Adding to 320321031000 its reverse (130123023), we get a palindrome (320451154023).

The spelling of 320321031000 in words is "three hundred twenty billion, three hundred twenty-one million, thirty-one thousand".