317305445 has 4 divisors (see below), whose sum is σ = 380766540. Its totient is φ = 253844352.

The previous prime is 317305427. The next prime is 317305477. The reversal of 317305445 is 544503713.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 544503713 = 13 ⋅41884901.

It can be written as a sum of positive squares in 2 ways, for example, as 168636196 + 148669249 = 12986^2 + 12193^2 .

It is a cyclic number.

It is not a de Polignac number, because 317305445 - 2²⁰ = 316256869 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31730540 + ... + 31730549.

It is an arithmetic number, because the mean of its divisors is an integer number (95191635).

Almost surely, 2^317305445 is an apocalyptic number.

It is an amenable number.

317305445 is a deficient number, since it is larger than the sum of its proper divisors (63461095).

317305445 is an equidigital number, since it uses as much as digits as its factorization.

317305445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63461094.

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 317305445 is about 17813.0694996679. The cubic root of 317305445 is about 682.0651212172.

The spelling of 317305445 in words is "three hundred seventeen million, three hundred five thousand, four hundred forty-five".