320131020320 has 48 divisors (see below), whose sum is σ = 760148745048. Its totient is φ = 127402383360.

The previous prime is 320131020301. The next prime is 320131020331. The reversal of 320131020320 is 23020131023.

It can be written as a sum of positive squares in 4 ways, for example, as 298802170384 + 21328849936 = 546628^2 + 146044^2 .

It is a super-2 number, since 2×320131020320² (a number of 24 digits) contains 22 as substring.

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, 5046701 + ... + 5109740.

Almost surely, 2^320131020320 is an apocalyptic number.

It is an amenable number.

320131020320 is an abundant number, since it is smaller than the sum of its proper divisors (440017724728).

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

320131020320 is a wasteful number, since it uses less digits than its factorization.

320131020320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10156653 (or 10156645 counting only the distinct ones).

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

Adding to 320131020320 its reverse (23020131023), we get a palindrome (343151151343).

The spelling of 320131020320 in words is "three hundred twenty billion, one hundred thirty-one million, twenty thousand, three hundred twenty".