317889379 has 2 divisors, whose sum is σ = 317889380. Its totient is φ = 317889378.

The previous prime is 317889353. The next prime is 317889391. The reversal of 317889379 is 973988713.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 317889379 - 2⁵ = 317889347 is a prime.

It is not a weakly prime, because it can be changed into another prime (317889349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158944689 + 158944690.

It is an arithmetic number, because the mean of its divisors is an integer number (158944690).

Almost surely, 2^317889379 is an apocalyptic number.

317889379 is a deficient number, since it is larger than the sum of its proper divisors (1).

317889379 is an equidigital number, since it uses as much as digits as its factorization.

317889379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2286144, while the sum is 55.

The square root of 317889379 is about 17829.4525715177. The cubic root of 317889379 is about 682.4832640012.

The spelling of 317889379 in words is "three hundred seventeen million, eight hundred eighty-nine thousand, three hundred seventy-nine".