31312323122111 has 2 divisors, whose sum is σ = 31312323122112. Its totient is φ = 31312323122110.

The previous prime is 31312323121997. The next prime is 31312323122207. The reversal of 31312323122111 is 11122132321313.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 31312323122111 - 2²² = 31312318927807 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31312323121111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15656161561055 + 15656161561056.

It is an arithmetic number, because the mean of its divisors is an integer number (15656161561056).

Almost surely, 2^{31312323122111} is an apocalyptic number.

31312323122111 is a deficient number, since it is larger than the sum of its proper divisors (1).

31312323122111 is an equidigital number, since it uses as much as digits as its factorization.

31312323122111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

Adding to 31312323122111 its reverse (11122132321313), we get a palindrome (42434455443424).

The spelling of 31312323122111 in words is "thirty-one trillion, three hundred twelve billion, three hundred twenty-three million, one hundred twenty-two thousand, one hundred eleven".