317399505 has 32 divisors (see below), whose sum is σ = 524392704. Its totient is φ = 163812096.

The previous prime is 317399497. The next prime is 317399513. The reversal of 317399505 is 505993713.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (317399497) and next prime (317399513).

It is not a de Polignac number, because 317399505 - 2³ = 317399497 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107884 + ... + 110786.

It is an arithmetic number, because the mean of its divisors is an integer number (16387272).

Almost surely, 2^317399505 is an apocalyptic number.

It is an amenable number.

317399505 is a deficient number, since it is larger than the sum of its proper divisors (206993199).

317399505 is a wasteful number, since it uses less digits than its factorization.

317399505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3145.

The product of its (nonzero) digits is 127575, while the sum is 42.

The square root of 317399505 is about 17815.7095003258. The cubic root of 317399505 is about 682.1325102353.

The spelling of 317399505 in words is "three hundred seventeen million, three hundred ninety-nine thousand, five hundred five".