12311137 has 2 divisors, whose sum is σ = 12311138. Its totient is φ = 12311136.

The previous prime is 12311119. The next prime is 12311147. The reversal of 12311137 is 73111321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11826721 + 484416 = 3439^2 + 696^2 .

It is an emirp because it is prime and its reverse (73111321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12311137 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (12311147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6155568 + 6155569.

It is an arithmetic number, because the mean of its divisors is an integer number (6155569).

Almost surely, 2^12311137 is an apocalyptic number.

It is an amenable number.

12311137 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311137 is an equidigital number, since it uses as much as digits as its factorization.

12311137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 126, while the sum is 19.

The square root of 12311137 is about 3508.7229870709. The cubic root of 12311137 is about 230.9046725971.

Adding to 12311137 its reverse (73111321), we get a palindrome (85422458).

The spelling of 12311137 in words is "twelve million, three hundred eleven thousand, one hundred thirty-seven".