323 has 4 divisors (see below), whose sum is σ = 360. Its totient is φ = 288.

The previous prime is 317. The next prime is 331.

323 is nontrivially palindromic in base 10 and base 14.

It is a Cunningham number, because it is equal to 18²-1.

323 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is the 8-th Motzkin number.

It is a cyclic number.

It is not a de Polignac number, because 323 - 2⁴ = 307 is a prime.

It is a fibodiv number, since the Fibonacci-like sequence with seeds 3 and 23 contains 323 itself.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

323 is an undulating number in base 10 and base 14.

It is a plaindrome in base 6, base 9, base 12, base 13 and base 15.

It is a nialpdrome in base 7.

It is a self number, because there is not a number n which added to its sum of digits gives 323.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313) by changing a digit.

Being equal to 4×3⁴-1, it is a generalized Woodall number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8 + ... + 26.

It is an arithmetic number, because the mean of its divisors is an integer number (90).

323 is a deficient number, since it is larger than the sum of its proper divisors (37).

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

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

The sum of its prime factors is 36.

The product of its digits is 18, while the sum is 8.

The square root of 323 is about 17.9722007556. The cubic root of 323 is about 6.8612120358.

The spelling of 323 in words is "three hundred twenty-three", and thus it is an aban number, an iban number, and an oban number.