317969 has 2 divisors, whose sum is σ = 317970. Its totient is φ = 317968.

The previous prime is 317963. The next prime is 317971. The reversal of 317969 is 969713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 169744 + 148225 = 412^2 + 385^2 .

It is an emirp because it is prime and its reverse (969713) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317969 is a prime.

It is a super-2 number, since 2×317969² = 202208569922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 317971, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (317963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158984 + 158985.

It is an arithmetic number, because the mean of its divisors is an integer number (158985).

2³¹⁷⁹⁶⁹ is an apocalyptic number.

It is an amenable number.

317969 is a deficient number, since it is larger than the sum of its proper divisors (1).

317969 is an equidigital number, since it uses as much as digits as its factorization.

317969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 35.

The square root of 317969 is about 563.8874001075. The cubic root of 317969 is about 68.2540239234.

It can be divided in two parts, 31 and 7969, that added together give a cube (8000 = 20³).

The spelling of 317969 in words is "three hundred seventeen thousand, nine hundred sixty-nine".