12697313 has 2 divisors, whose sum is σ = 12697314. Its totient is φ = 12697312.

The previous prime is 12697309. The next prime is 12697343. The reversal of 12697313 is 31379621.

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., 10975969 + 1721344 = 3313^2 + 1312^2 .

It is a cyclic number.

It is not a de Polignac number, because 12697313 - 2² = 12697309 is a prime.

It is a super-2 number, since 2×12697313² = 322443514839938, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12697313.

It is not a weakly prime, because it can be changed into another prime (12697303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6348656 + 6348657.

It is an arithmetic number, because the mean of its divisors is an integer number (6348657).

Almost surely, 2^12697313 is an apocalyptic number.

It is an amenable number.

12697313 is a deficient number, since it is larger than the sum of its proper divisors (1).

12697313 is an equidigital number, since it uses as much as digits as its factorization.

12697313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6804, while the sum is 32.

The square root of 12697313 is about 3563.3289211073. The cubic root of 12697313 is about 233.2942000131.

The spelling of 12697313 in words is "twelve million, six hundred ninety-seven thousand, three hundred thirteen".