204317 has 4 divisors (see below), whose sum is σ = 207840. Its totient is φ = 200796.

The previous prime is 204311. The next prime is 204319. The reversal of 204317 is 713402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 713402 = 2 ⋅356701.

It is a cyclic number.

It is not a de Polignac number, because 204317 - 2⁴ = 204301 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204295 and 204304.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 204317.

It is not an unprimeable number, because it can be changed into a prime (204311) 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, 1673 + ... + 1790.

It is an arithmetic number, because the mean of its divisors is an integer number (51960).

2²⁰⁴³¹⁷ is an apocalyptic number.

It is an amenable number.

204317 is a deficient number, since it is larger than the sum of its proper divisors (3523).

204317 is an equidigital number, since it uses as much as digits as its factorization.

204317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3522.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 204317 is about 452.0143803022. The cubic root of 204317 is about 58.8981292938.

Adding to 204317 its reverse (713402), we get a palindrome (917719).

The spelling of 204317 in words is "two hundred four thousand, three hundred seventeen", and thus it is an iban number.