12317971 has 2 divisors, whose sum is σ = 12317972. Its totient is φ = 12317970.

The previous prime is 12317957. The next prime is 12317983. The reversal of 12317971 is 17971321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12317971 - 2⁵ = 12317939 is a prime.

It is not a weakly prime, because it can be changed into another prime (12317941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6158985 + 6158986.

It is an arithmetic number, because the mean of its divisors is an integer number (6158986).

Almost surely, 2^12317971 is an apocalyptic number.

12317971 is a deficient number, since it is larger than the sum of its proper divisors (1).

12317971 is an equidigital number, since it uses as much as digits as its factorization.

12317971 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2646, while the sum is 31.

The square root of 12317971 is about 3509.6967105435. The cubic root of 12317971 is about 230.9473903042.

The spelling of 12317971 in words is "twelve million, three hundred seventeen thousand, nine hundred seventy-one".