12013326431 has 2 divisors, whose sum is σ = 12013326432. Its totient is φ = 12013326430.

The previous prime is 12013326379. The next prime is 12013326433. The reversal of 12013326431 is 13462331021.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12013326431 is a prime.

It is a super-2 number, since 2×12013326431² (a number of 21 digits) contains 22 as substring.

Together with 12013326433, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12013326431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12013326433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006663215 + 6006663216.

It is an arithmetic number, because the mean of its divisors is an integer number (6006663216).

Almost surely, 2^12013326431 is an apocalyptic number.

12013326431 is a deficient number, since it is larger than the sum of its proper divisors (1).

12013326431 is an equidigital number, since it uses as much as digits as its factorization.

12013326431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 12013326431 its reverse (13462331021), we get a palindrome (25475657452).

The spelling of 12013326431 in words is "twelve billion, thirteen million, three hundred twenty-six thousand, four hundred thirty-one".