12311331111311 has 2 divisors, whose sum is σ = 12311331111312. Its totient is φ = 12311331111310.

The previous prime is 12311331111269. The next prime is 12311331111341. The reversal of 12311331111311 is 11311113311321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12311331111311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12311331111341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155665555655 + 6155665555656.

It is an arithmetic number, because the mean of its divisors is an integer number (6155665555656).

Almost surely, 2^{12311331111311} is an apocalyptic number.

12311331111311 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311331111311 is an equidigital number, since it uses as much as digits as its factorization.

12311331111311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 23.

Adding to 12311331111311 its reverse (11311113311321), we get a palindrome (23622444422632).

The spelling of 12311331111311 in words is "twelve trillion, three hundred eleven billion, three hundred thirty-one million, one hundred eleven thousand, three hundred eleven".