317305 has 8 divisors (see below), whose sum is σ = 403272. Its totient is φ = 238848.

The previous prime is 317279. The next prime is 317321. The reversal of 317305 is 503713.

It can be written as a sum of positive squares in 4 ways, for example, as 71289 + 246016 = 267^2 + 496^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 317305 - 2⁹ = 316793 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1782 + ... + 1951.

It is an arithmetic number, because the mean of its divisors is an integer number (50409).

2³¹⁷³⁰⁵ is an apocalyptic number.

It is an amenable number.

317305 is a deficient number, since it is larger than the sum of its proper divisors (85967).

317305 is a wasteful number, since it uses less digits than its factorization.

317305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3755.

The product of its (nonzero) digits is 315, while the sum is 19.

The square root of 317305 is about 563.2983223834. The cubic root of 317305 is about 68.2064802367.

It can be divided in two parts, 3 and 17305, that multiplied together give a palindrome (51915).

The spelling of 317305 in words is "three hundred seventeen thousand, three hundred five".