172317 has 8 divisors (see below), whose sum is σ = 233280. Its totient is φ = 113120.

The previous prime is 172313. The next prime is 172321. The reversal of 172317 is 713271.

It is an interprime number because it is at equal distance from previous prime (172313) and next prime (172321).

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 172317 - 2² = 172313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172293 and 172302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172313) 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, 192 + ... + 617.

It is an arithmetic number, because the mean of its divisors is an integer number (29160).

2¹⁷²³¹⁷ is an apocalyptic number.

It is an amenable number.

172317 is a deficient number, since it is larger than the sum of its proper divisors (60963).

172317 is an equidigital number, since it uses as much as digits as its factorization.

172317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883.

The product of its digits is 294, while the sum is 21.

The square root of 172317 is about 415.1108285747. The cubic root of 172317 is about 55.6471220346.

Adding to 172317 its reverse (713271), we get a palindrome (885588).

The spelling of 172317 in words is "one hundred seventy-two thousand, three hundred seventeen", and thus it is an iban number.