12507317 has 2 divisors, whose sum is σ = 12507318. Its totient is φ = 12507316.

The previous prime is 12507269. The next prime is 12507329. The reversal of 12507317 is 71370521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9991921 + 2515396 = 3161^2 + 1586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12507317 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12507347) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6253658 + 6253659.

It is an arithmetic number, because the mean of its divisors is an integer number (6253659).

Almost surely, 2^12507317 is an apocalyptic number.

It is an amenable number.

12507317 is a deficient number, since it is larger than the sum of its proper divisors (1).

12507317 is an equidigital number, since it uses as much as digits as its factorization.

12507317 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 12507317 is about 3536.5685346109. The cubic root of 12507317 is about 232.1247161885.

Adding to 12507317 its reverse (71370521), we get a palindrome (83877838).

The spelling of 12507317 in words is "twelve million, five hundred seven thousand, three hundred seventeen".