12311149 has 2 divisors, whose sum is σ = 12311150. Its totient is φ = 12311148.

The previous prime is 12311147. The next prime is 12311153. The reversal of 12311149 is 94111321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12299049 + 12100 = 3507^2 + 110^2 .

It is an emirp because it is prime and its reverse (94111321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12311149 - 2¹ = 12311147 is a prime.

Together with 12311147, it forms a pair of twin primes.

It is a congruent number.

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, 6155574 + 6155575.

It is an arithmetic number, because the mean of its divisors is an integer number (6155575).

Almost surely, 2^12311149 is an apocalyptic number.

It is an amenable number.

12311149 is a deficient number, since it is larger than the sum of its proper divisors (1).

12311149 is an equidigital number, since it uses as much as digits as its factorization.

12311149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216, while the sum is 22.

The square root of 12311149 is about 3508.7246970944. The cubic root of 12311149 is about 230.9047476201.

The spelling of 12311149 in words is "twelve million, three hundred eleven thousand, one hundred forty-nine".