231323232113 has 24 divisors (see below), whose sum is σ = 246118953600. Its totient is φ = 217003332480.

The previous prime is 231323232109. The next prime is 231323232181. The reversal of 231323232113 is 311232323132.

It is not a de Polignac number, because 231323232113 - 2² = 231323232109 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231323232313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30720533 + ... + 30728061.

It is an arithmetic number, because the mean of its divisors is an integer number (10254956400).

Almost surely, 2^231323232113 is an apocalyptic number.

231323232113 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

231323232113 is a deficient number, since it is larger than the sum of its proper divisors (14795721487).

231323232113 is an equidigital number, since it uses as much as digits as its factorization.

231323232113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8033 (or 7972 counting only the distinct ones).

The product of its digits is 3888, while the sum is 26.

Adding to 231323232113 its reverse (311232323132), we get a palindrome (542555555245).

The spelling of 231323232113 in words is "two hundred thirty-one billion, three hundred twenty-three million, two hundred thirty-two thousand, one hundred thirteen".