317380865 has 16 divisors (see below), whose sum is σ = 388702800. Its totient is φ = 248709120.

The previous prime is 317380849. The next prime is 317380873. The reversal of 317380865 is 568083713.

It can be written as a sum of positive squares in 8 ways, for example, as 9834496 + 307546369 = 3136^2 + 17537^2 .

It is not a de Polignac number, because 317380865 - 2⁴ = 317380849 is a prime.

It is a super-2 number, since 2×317380865² = 201461226936296450, which contains 22 as substring.

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 76361 + ... + 80409.

It is an arithmetic number, because the mean of its divisors is an integer number (24293925).

Almost surely, 2^317380865 is an apocalyptic number.

It is an amenable number.

317380865 is a deficient number, since it is larger than the sum of its proper divisors (71321935).

317380865 is a wasteful number, since it uses less digits than its factorization.

317380865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 317380865 is about 17815.1863588344. The cubic root of 317380865 is about 682.1191567185.

The spelling of 317380865 in words is "three hundred seventeen million, three hundred eighty thousand, eight hundred sixty-five".