91317 has 8 divisors (see below), whose sum is σ = 124000. Its totient is φ = 59760.

The previous prime is 91309. The next prime is 91331. The reversal of 91317 is 71319.

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

It is not a de Polignac number, because 91317 - 2³ = 91309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91293 and 91302.

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 91317.

It is not an unprimeable number, because it can be changed into a prime (91367) 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, 67 + ... + 432.

It is an arithmetic number, because the mean of its divisors is an integer number (15500).

2⁹¹³¹⁷ is an apocalyptic number.

It is an amenable number.

91317 is a deficient number, since it is larger than the sum of its proper divisors (32683).

91317 is a wasteful number, since it uses less digits than its factorization.

91317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563.

The product of its digits is 189, while the sum is 21.

The square root of 91317 is about 302.1870281796. The cubic root of 91317 is about 45.0315827671.

It can be divided in two parts, 9 and 1317, that added together give a triangular number (1326 = T₅₁).

The spelling of 91317 in words is "ninety-one thousand, three hundred seventeen".