12311321332231 has 2 divisors, whose sum is σ = 12311321332232. Its totient is φ = 12311321332230.

The previous prime is 12311321332169. The next prime is 12311321332241. The reversal of 12311321332231 is 13223312311321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12311321332231 - 2¹⁹ = 12311320807943 is a prime.

It is a super-2 number, since 2×12311321332231² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12311321332231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12311321332241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155660666115 + 6155660666116.

It is an arithmetic number, because the mean of its divisors is an integer number (6155660666116).

Almost surely, 2^{12311321332231} is an apocalyptic number.

12311321332231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311321332231 is an equidigital number, since it uses as much as digits as its factorization.

12311321332231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 28.

Adding to 12311321332231 its reverse (13223312311321), we get a palindrome (25534633643552).

The spelling of 12311321332231 in words is "twelve trillion, three hundred eleven billion, three hundred twenty-one million, three hundred thirty-two thousand, two hundred thirty-one".