317105509 has 6 divisors (see below), whose sum is σ = 368877894. Its totient is φ = 271804680.

The previous prime is 317105507. The next prime is 317105557. The reversal of 317105509 is 905501713.

It can be written as a sum of positive squares in only one way, i.e., 303804900 + 13300609 = 17430^2 + 3647^2 .

It is not a de Polignac number, because 317105509 - 2¹ = 317105507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (317105507) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3235722 + ... + 3235819.

It is an arithmetic number, because the mean of its divisors is an integer number (61479649).

Almost surely, 2^317105509 is an apocalyptic number.

It is an amenable number.

317105509 is a deficient number, since it is larger than the sum of its proper divisors (51772385).

317105509 is an equidigital number, since it uses as much as digits as its factorization.

317105509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6471555 (or 6471548 counting only the distinct ones).

The product of its (nonzero) digits is 4725, while the sum is 31.

The square root of 317105509 is about 17807.4565561733. The cubic root of 317105509 is about 681.9218333888.

The spelling of 317105509 in words is "three hundred seventeen million, one hundred five thousand, five hundred nine".