317140939 has 2 divisors, whose sum is σ = 317140940. Its totient is φ = 317140938.

The previous prime is 317140937. The next prime is 317140963. The reversal of 317140939 is 939041713.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 317140939 - 2¹ = 317140937 is a prime.

Together with 317140937, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 317140898 and 317140907.

It is not a weakly prime, because it can be changed into another prime (317140937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158570469 + 158570470.

It is an arithmetic number, because the mean of its divisors is an integer number (158570470).

Almost surely, 2^317140939 is an apocalyptic number.

317140939 is a deficient number, since it is larger than the sum of its proper divisors (1).

317140939 is an equidigital number, since it uses as much as digits as its factorization.

317140939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 317140939 is about 17808.4513363740. The cubic root of 317140939 is about 681.9472293428.

The spelling of 317140939 in words is "three hundred seventeen million, one hundred forty thousand, nine hundred thirty-nine".