320312131020023 has 4 divisors (see below), whose sum is σ = 320317908815520. Its totient is φ = 320306353224528.

The previous prime is 320312131020019. The next prime is 320312131020059. The reversal of 320312131020023 is 320020131213023.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320312131020023 - 2² = 320312131020019 is a prime.

It is a super-2 number, since 2×320312131020023² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320312131020083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2888814590 + ... + 2888925467.

It is an arithmetic number, because the mean of its divisors is an integer number (80079477203880).

Almost surely, 2^{320312131020023} is an apocalyptic number.

320312131020023 is a deficient number, since it is larger than the sum of its proper divisors (5777795497).

320312131020023 is an equidigital number, since it uses as much as digits as its factorization.

320312131020023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5777795496.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 320312131020023 its reverse (320020131213023), we get a palindrome (640332262233046).

The spelling of 320312131020023 in words is "three hundred twenty trillion, three hundred twelve billion, one hundred thirty-one million, twenty thousand, twenty-three".