11311233137 has 2 divisors, whose sum is σ = 11311233138. Its totient is φ = 11311233136.

The previous prime is 11311233071. The next prime is 11311233149. The reversal of 11311233137 is 73133211311.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11100518881 + 210714256 = 105359^2 + 14516^2 .

It is a cyclic number.

It is not a de Polignac number, because 11311233137 - 2²⁸ = 11042797681 is a prime.

It is not a weakly prime, because it can be changed into another prime (11311233187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5655616568 + 5655616569.

It is an arithmetic number, because the mean of its divisors is an integer number (5655616569).

Almost surely, 2^11311233137 is an apocalyptic number.

It is an amenable number.

11311233137 is a deficient number, since it is larger than the sum of its proper divisors (1).

11311233137 is an equidigital number, since it uses as much as digits as its factorization.

11311233137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1134, while the sum is 26.

Adding to 11311233137 its reverse (73133211311), we get a palindrome (84444444448).

The spelling of 11311233137 in words is "eleven billion, three hundred eleven million, two hundred thirty-three thousand, one hundred thirty-seven".