163317 has 24 divisors (see below), whose sum is σ = 279072. Its totient is φ = 84000.

The previous prime is 163309. The next prime is 163321. The reversal of 163317 is 713361.

163317 is nontrivially palindromic in base 6.

It is not a de Polignac number, because 163317 - 2³ = 163309 is a prime.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (21).

163317 is a lucky number.

It is a plaindrome in base 15.

It is a zygodrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 163293 and 163302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1567 + ... + 1667.

It is an arithmetic number, because the mean of its divisors is an integer number (11628).

2¹⁶³³¹⁷ is an apocalyptic number.

It is an amenable number.

163317 is a deficient number, since it is larger than the sum of its proper divisors (115755).

163317 is a wasteful number, since it uses less digits than its factorization.

163317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 122 counting only the distinct ones).

The product of its digits is 378, while the sum is 21.

The square root of 163317 is about 404.1249806681. The cubic root of 163317 is about 54.6609444404.

163317 divided by its sum of digits (21) gives a palindrome (7777).

Adding to 163317 its reverse (713361), we get a palindrome (876678).

It can be divided in two parts, 16 and 3317, that added together give a palindrome (3333).

The spelling of 163317 in words is "one hundred sixty-three thousand, three hundred seventeen".