231013323331 has 6 divisors (see below), whose sum is σ = 268729784340. Its totient is φ = 198011419956.

The previous prime is 231013323319. The next prime is 231013323491. The reversal of 231013323331 is 133323310132.

It is not a de Polignac number, because 231013323331 - 2¹³ = 231013315139 is a prime.

It is a super-2 number, since 2×231013323331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 231013323296 and 231013323305.

It is not an unprimeable number, because it can be changed into a prime (231013324331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2357278761 + ... + 2357278858.

It is an arithmetic number, because the mean of its divisors is an integer number (44788297390).

Almost surely, 2^231013323331 is an apocalyptic number.

231013323331 is a deficient number, since it is larger than the sum of its proper divisors (37716461009).

231013323331 is an equidigital number, since it uses as much as digits as its factorization.

231013323331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4714557633 (or 4714557626 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 231013323331 its reverse (133323310132), we get a palindrome (364336633463).

The spelling of 231013323331 in words is "two hundred thirty-one billion, thirteen million, three hundred twenty-three thousand, three hundred thirty-one".