18342317 has 6 divisors (see below), whose sum is σ = 21337038. Its totient is φ = 15721944.

The previous prime is 18342283. The next prime is 18342319. The reversal of 18342317 is 71324381.

It can be written as a sum of positive squares in only one way, i.e., 9616201 + 8726116 = 3101^2 + 2954^2 .

It is not a de Polignac number, because 18342317 - 2⁸ = 18342061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18342317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18342319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 187118 + ... + 187215.

It is an arithmetic number, because the mean of its divisors is an integer number (3556173).

Almost surely, 2^18342317 is an apocalyptic number.

It is an amenable number.

18342317 is a deficient number, since it is larger than the sum of its proper divisors (2994721).

18342317 is an equidigital number, since it uses as much as digits as its factorization.

18342317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374347 (or 374340 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 18342317 is about 4282.7931306567. The cubic root of 18342317 is about 263.7250590733.

Adding to 18342317 its reverse (71324381), we get a palindrome (89666698).

The spelling of 18342317 in words is "eighteen million, three hundred forty-two thousand, three hundred seventeen".