317290505 has 8 divisors (see below), whose sum is σ = 435141312. Its totient is φ = 217570608.

The previous prime is 317290471. The next prime is 317290511. The reversal of 317290505 is 505092713.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 317290505 - 2¹⁰ = 317289481 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4532687 + ... + 4532756.

It is an arithmetic number, because the mean of its divisors is an integer number (54392664).

Almost surely, 2^317290505 is an apocalyptic number.

317290505 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

317290505 is a deficient number, since it is larger than the sum of its proper divisors (117850807).

317290505 is an equidigital number, since it uses as much as digits as its factorization.

317290505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9065455.

The product of its (nonzero) digits is 9450, while the sum is 32.

The square root of 317290505 is about 17812.6501397181. The cubic root of 317290505 is about 682.0544162713.

The spelling of 317290505 in words is "three hundred seventeen million, two hundred ninety thousand, five hundred five".