813317 has 8 divisors (see below), whose sum is σ = 846720. Its totient is φ = 780640.

The previous prime is 813311. The next prime is 813343. The reversal of 813317 is 713318.

It is a happy number.

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

It is not a de Polignac number, because 813317 - 2⁴ = 813301 is a prime.

It is a super-2 number, since 2×813317² = 1322969084978, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 813292 and 813301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813311) 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, 3284 + ... + 3522.

It is an arithmetic number, because the mean of its divisors is an integer number (105840).

2⁸¹³³¹⁷ is an apocalyptic number.

It is an amenable number.

813317 is a deficient number, since it is larger than the sum of its proper divisors (33403).

813317 is a wasteful number, since it uses less digits than its factorization.

813317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363.

The product of its digits is 504, while the sum is 23.

The square root of 813317 is about 901.8408950585. The cubic root of 813317 is about 93.3440449724.

Subtracting from 813317 its reverse (713318), we obtain a palindrome (99999).

The spelling of 813317 in words is "eight hundred thirteen thousand, three hundred seventeen".