13312517 has 2 divisors, whose sum is σ = 13312518. Its totient is φ = 13312516.

The previous prime is 13312493. The next prime is 13312529. The reversal of 13312517 is 71521331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11874916 + 1437601 = 3446^2 + 1199^2 .

It is a cyclic number.

It is not a de Polignac number, because 13312517 - 2⁸ = 13312261 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13312492 and 13312501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13311517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6656258 + 6656259.

It is an arithmetic number, because the mean of its divisors is an integer number (6656259).

Almost surely, 2^13312517 is an apocalyptic number.

It is an amenable number.

13312517 is a deficient number, since it is larger than the sum of its proper divisors (1).

13312517 is an equidigital number, since it uses as much as digits as its factorization.

13312517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 630, while the sum is 23.

The square root of 13312517 is about 3648.6322094725. The cubic root of 13312517 is about 237.0027535628.

Adding to 13312517 its reverse (71521331), we get a palindrome (84833848).

The spelling of 13312517 in words is "thirteen million, three hundred twelve thousand, five hundred seventeen".