123317 has 4 divisors (see below), whose sum is σ = 124416. Its totient is φ = 122220.

The previous prime is 123311. The next prime is 123323. The reversal of 123317 is 713321.

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 a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (123311) and next prime (123323).

It is a cyclic number.

It is not a de Polignac number, because 123317 - 2¹⁶ = 57781 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123295 and 123304.

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 123317.

It is not an unprimeable number, because it can be changed into a prime (123311) 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, 359 + ... + 612.

It is an arithmetic number, because the mean of its divisors is an integer number (31104).

2¹²³³¹⁷ is an apocalyptic number.

It is an amenable number.

123317 is a deficient number, since it is larger than the sum of its proper divisors (1099).

123317 is an equidigital number, since it uses as much as digits as its factorization.

123317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098.

The product of its digits is 126, while the sum is 17.

The square root of 123317 is about 351.1652032876. The cubic root of 123317 is about 49.7745852913.

Adding to 123317 its reverse (713321), we get a palindrome (836638).

The spelling of 123317 in words is "one hundred twenty-three thousand, three hundred seventeen", and thus it is an iban number.