11565313 has 2 divisors, whose sum is σ = 11565314. Its totient is φ = 11565312.

The previous prime is 11565269. The next prime is 11565331. The reversal of 11565313 is 31356511.

Together with next prime (11565331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10705984 + 859329 = 3272^2 + 927^2 .

It is a cyclic number.

It is not a de Polignac number, because 11565313 - 2⁹ = 11564801 is a prime.

It is not a weakly prime, because it can be changed into another prime (11565373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5782656 + 5782657.

It is an arithmetic number, because the mean of its divisors is an integer number (5782657).

Almost surely, 2^11565313 is an apocalyptic number.

It is an amenable number.

11565313 is a deficient number, since it is larger than the sum of its proper divisors (1).

11565313 is an equidigital number, since it uses as much as digits as its factorization.

11565313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1350, while the sum is 25.

The square root of 11565313 is about 3400.7812337756. The cubic root of 11565313 is about 226.1443787293.

The spelling of 11565313 in words is "eleven million, five hundred sixty-five thousand, three hundred thirteen".