320310221231 has 48 divisors (see below), whose sum is σ = 433938355200. Its totient is φ = 230066844480.

The previous prime is 320310221227. The next prime is 320310221347. The reversal of 320310221231 is 132122013023.

It is not a de Polignac number, because 320310221231 - 2² = 320310221227 is a prime.

It is a super-2 number, since 2×320310221231² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320310221201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7896680 + ... + 7937138.

It is an arithmetic number, because the mean of its divisors is an integer number (9040382400).

Almost surely, 2^320310221231 is an apocalyptic number.

320310221231 is a deficient number, since it is larger than the sum of its proper divisors (113628133969).

320310221231 is a wasteful number, since it uses less digits than its factorization.

320310221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41220 (or 41209 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 320310221231 its reverse (132122013023), we get a palindrome (452432234254).

The spelling of 320310221231 in words is "three hundred twenty billion, three hundred ten million, two hundred twenty-one thousand, two hundred thirty-one".