317037989 has 2 divisors, whose sum is σ = 317037990. Its totient is φ = 317037988.

The previous prime is 317037901. The next prime is 317037991. The reversal of 317037989 is 989730713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 238857025 + 78180964 = 15455^2 + 8842^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-317037989 is a prime.

Together with 317037991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (317037389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158518994 + 158518995.

It is an arithmetic number, because the mean of its divisors is an integer number (158518995).

Almost surely, 2^317037989 is an apocalyptic number.

It is an amenable number.

317037989 is a deficient number, since it is larger than the sum of its proper divisors (1).

317037989 is an equidigital number, since it uses as much as digits as its factorization.

317037989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 285768, while the sum is 47.

The square root of 317037989 is about 17805.5606202108. The cubic root of 317037989 is about 681.8734303292.

The spelling of 317037989 in words is "three hundred seventeen million, thirty-seven thousand, nine hundred eighty-nine".