12165313 has 2 divisors, whose sum is σ = 12165314. Its totient is φ = 12165312.

The previous prime is 12165311. The next prime is 12165317. The reversal of 12165313 is 31356121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11512449 + 652864 = 3393^2 + 808^2 .

It is an emirp because it is prime and its reverse (31356121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12165313 - 2¹ = 12165311 is a prime.

Together with 12165311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12165311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6082656 + 6082657.

It is an arithmetic number, because the mean of its divisors is an integer number (6082657).

Almost surely, 2^12165313 is an apocalyptic number.

It is an amenable number.

12165313 is a deficient number, since it is larger than the sum of its proper divisors (1).

12165313 is an equidigital number, since it uses as much as digits as its factorization.

12165313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 540, while the sum is 22.

The square root of 12165313 is about 3487.8808752594. The cubic root of 12165313 is about 229.9893693889.

The spelling of 12165313 in words is "twelve million, one hundred sixty-five thousand, three hundred thirteen".