317880065 has 4 divisors (see below), whose sum is σ = 381456084. Its totient is φ = 254304048.

The previous prime is 317880047. The next prime is 317880067. The reversal of 317880065 is 560088713.

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 134467216 + 183412849 = 11596^2 + 13543^2 .

It is a cyclic number.

It is not a de Polignac number, because 317880065 - 2⁶ = 317880001 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (317880067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31788002 + ... + 31788011.

It is an arithmetic number, because the mean of its divisors is an integer number (95364021).

Almost surely, 2^317880065 is an apocalyptic number.

It is an amenable number.

317880065 is a deficient number, since it is larger than the sum of its proper divisors (63576019).

317880065 is an equidigital number, since it uses as much as digits as its factorization.

317880065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63576018.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 317880065 is about 17829.1913725777. The cubic root of 317880065 is about 682.4765984632.

The spelling of 317880065 in words is "three hundred seventeen million, eight hundred eighty thousand, sixty-five".