263317 has 4 divisors (see below), whose sum is σ = 267840. Its totient is φ = 258796.

The previous prime is 263303. The next prime is 263323. The reversal of 263317 is 713362.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-263317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (263387) 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, 2173 + ... + 2290.

It is an arithmetic number, because the mean of its divisors is an integer number (66960).

2²⁶³³¹⁷ is an apocalyptic number.

It is an amenable number.

263317 is a deficient number, since it is larger than the sum of its proper divisors (4523).

263317 is an equidigital number, since it uses as much as digits as its factorization.

263317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4522.

The product of its digits is 756, while the sum is 22.

The square root of 263317 is about 513.1442292377. The cubic root of 263317 is about 64.0953169557.

Adding to 263317 its reverse (713362), we get a palindrome (976679).

The spelling of 263317 in words is "two hundred sixty-three thousand, three hundred seventeen".