317230217 has 8 divisors (see below), whose sum is σ = 347473800. Its totient is φ = 288273664.

The previous prime is 317230189. The next prime is 317230219. The reversal of 317230217 is 712032713.

It can be written as a sum of positive squares in 4 ways, for example, as 13808656 + 303421561 = 3716^2 + 17419^2 .

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 317230217 - 2¹⁰ = 317229193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (317230219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 321242 + ... + 322227.

It is an arithmetic number, because the mean of its divisors is an integer number (43434225).

Almost surely, 2^317230217 is an apocalyptic number.

It is an amenable number.

317230217 is a deficient number, since it is larger than the sum of its proper divisors (30243583).

317230217 is a wasteful number, since it uses less digits than its factorization.

317230217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643515.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 317230217 is about 17810.9577788506. The cubic root of 317230217 is about 682.0112147461.

The spelling of 317230217 in words is "three hundred seventeen million, two hundred thirty thousand, two hundred seventeen".