12123131711 has 2 divisors, whose sum is σ = 12123131712. Its totient is φ = 12123131710.

The previous prime is 12123131651. The next prime is 12123131719. The reversal of 12123131711 is 11713132121.

It is a strong prime.

It is an emirp because it is prime and its reverse (11713132121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12123131711 - 2¹⁰ = 12123130687 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12123131719) 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, 6061565855 + 6061565856.

It is an arithmetic number, because the mean of its divisors is an integer number (6061565856).

Almost surely, 2^12123131711 is an apocalyptic number.

12123131711 is a deficient number, since it is larger than the sum of its proper divisors (1).

12123131711 is an equidigital number, since it uses as much as digits as its factorization.

12123131711 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252, while the sum is 23.

Adding to 12123131711 its reverse (11713132121), we get a palindrome (23836263832).

The spelling of 12123131711 in words is "twelve billion, one hundred twenty-three million, one hundred thirty-one thousand, seven hundred eleven".