320023111331 has 32 divisors (see below), whose sum is σ = 420282347520. Its totient is φ = 236079165600.

The previous prime is 320023111241. The next prime is 320023111333. The reversal of 320023111331 is 133111320023.

It is a cyclic number.

It is not a de Polignac number, because 320023111331 - 2²⁶ = 319956002467 is a prime.

It is a super-2 number, since 2×320023111331² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320023111333) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2041376 + ... + 2192546.

It is an arithmetic number, because the mean of its divisors is an integer number (13133823360).

Almost surely, 2^320023111331 is an apocalyptic number.

320023111331 is a deficient number, since it is larger than the sum of its proper divisors (100259236189).

320023111331 is a wasteful number, since it uses less digits than its factorization.

320023111331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152655.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 320023111331 its reverse (133111320023), we get a palindrome (453134431354).

The spelling of 320023111331 in words is "three hundred twenty billion, twenty-three million, one hundred eleven thousand, three hundred thirty-one".