320321013020 has 24 divisors (see below), whose sum is σ = 673212750000. Its totient is φ = 128025810432.

The previous prime is 320321012981. The next prime is 320321013043. The reversal of 320321013020 is 20310123023.

It is a self number, because there is not a number n which added to its sum of digits gives 320321013020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6386570 + ... + 6436529.

It is an arithmetic number, because the mean of its divisors is an integer number (28050531250).

Almost surely, 2^320321013020 is an apocalyptic number.

It is an amenable number.

320321013020 is an abundant number, since it is smaller than the sum of its proper divisors (352891736980).

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

320321013020 is a wasteful number, since it uses less digits than its factorization.

320321013020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12824357 (or 12824355 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 320321013020 its reverse (20310123023), we get a palindrome (340631136043).

The spelling of 320321013020 in words is "three hundred twenty billion, three hundred twenty-one million, thirteen thousand, twenty".