12313309 has 2 divisors, whose sum is σ = 12313310. Its totient is φ = 12313308.

The previous prime is 12313297. The next prime is 12313319. The reversal of 12313309 is 90331321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9474084 + 2839225 = 3078^2 + 1685^2 .

It is a cyclic number.

It is not a de Polignac number, because 12313309 - 2⁷ = 12313181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12313309.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12313319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6156654 + 6156655.

It is an arithmetic number, because the mean of its divisors is an integer number (6156655).

Almost surely, 2^12313309 is an apocalyptic number.

It is an amenable number.

12313309 is a deficient number, since it is larger than the sum of its proper divisors (1).

12313309 is an equidigital number, since it uses as much as digits as its factorization.

12313309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 22.

The square root of 12313309 is about 3509.0324877379. The cubic root of 12313309 is about 230.9182509654.

The spelling of 12313309 in words is "twelve million, three hundred thirteen thousand, three hundred nine".