12311323111 has 2 divisors, whose sum is σ = 12311323112. Its totient is φ = 12311323110.

The previous prime is 12311323081. The next prime is 12311323151. The reversal of 12311323111 is 11132311321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12311323111 - 2²⁷ = 12177105383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12311323151) 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 as a sum of consecutive naturals, namely, 6155661555 + 6155661556.

It is an arithmetic number, because the mean of its divisors is an integer number (6155661556).

Almost surely, 2^12311323111 is an apocalyptic number.

12311323111 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311323111 is an equidigital number, since it uses as much as digits as its factorization.

12311323111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108, while the sum is 19.

Adding to 12311323111 its reverse (11132311321), we get a palindrome (23443634432).

The spelling of 12311323111 in words is "twelve billion, three hundred eleven million, three hundred twenty-three thousand, one hundred eleven".