12331131332231 has 4 divisors (see below), whose sum is σ = 12533281026264. Its totient is φ = 12128981638200.

The previous prime is 12331131332207. The next prime is 12331131332239. The reversal of 12331131332231 is 13223313113321.

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 12331131332231 - 2⁴² = 7933084821127 is a prime.

It is a super-2 number, since 2×12331131332231² (a number of 27 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 = 12331131332194 and 12331131332203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331131332239) 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 3 ways as a sum of consecutive naturals, for example, 101074846925 + ... + 101074847046.

It is an arithmetic number, because the mean of its divisors is an integer number (3133320256566).

Almost surely, 2^{12331131332231} is an apocalyptic number.

12331131332231 is a deficient number, since it is larger than the sum of its proper divisors (202149694033).

12331131332231 is an equidigital number, since it uses as much as digits as its factorization.

12331131332231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202149694032.

The product of its digits is 5832, while the sum is 29.

Adding to 12331131332231 its reverse (13223313113321), we get a palindrome (25554444445552).

The spelling of 12331131332231 in words is "twelve trillion, three hundred thirty-one billion, one hundred thirty-one million, three hundred thirty-two thousand, two hundred thirty-one".