317970085 has 4 divisors (see below), whose sum is σ = 381564108. Its totient is φ = 254376064.

The previous prime is 317970077. The next prime is 317970109. The reversal of 317970085 is 580079713.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 86899684 + 231070401 = 9322^2 + 15201^2 .

It is a cyclic number.

It is not a de Polignac number, because 317970085 - 2³ = 317970077 is a prime.

It is a super-2 number, since 2×317970085² = 202209949909814450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31797004 + ... + 31797013.

It is an arithmetic number, because the mean of its divisors is an integer number (95391027).

Almost surely, 2^317970085 is an apocalyptic number.

It is an amenable number.

317970085 is a deficient number, since it is larger than the sum of its proper divisors (63594023).

317970085 is an equidigital number, since it uses as much as digits as its factorization.

317970085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63594022.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 317970085 is about 17831.7157054502. The cubic root of 317970085 is about 682.5410155728.

The spelling of 317970085 in words is "three hundred seventeen million, nine hundred seventy thousand, eighty-five".