12317647 has 2 divisors, whose sum is σ = 12317648. Its totient is φ = 12317646.

The previous prime is 12317623. The next prime is 12317693. The reversal of 12317647 is 74671321.

It is a weak prime.

It is an emirp because it is prime and its reverse (74671321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12317647 - 2¹⁵ = 12284879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12317047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6158823 + 6158824.

It is an arithmetic number, because the mean of its divisors is an integer number (6158824).

Almost surely, 2^12317647 is an apocalyptic number.

12317647 is a deficient number, since it is larger than the sum of its proper divisors (1).

12317647 is an equidigital number, since it uses as much as digits as its factorization.

12317647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7056, while the sum is 31.

The square root of 12317647 is about 3509.6505524055. The cubic root of 12317647 is about 230.9453654142.

Adding to 12317647 its reverse (74671321), we get a palindrome (86988968).

The spelling of 12317647 in words is "twelve million, three hundred seventeen thousand, six hundred forty-seven".