323381 has 2 divisors, whose sum is σ = 323382. Its totient is φ = 323380.

The previous prime is 323377. The next prime is 323383. The reversal of 323381 is 183323.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320356 + 3025 = 566^2 + 55^2 .

It is a cyclic number.

It is not a de Polignac number, because 323381 - 2² = 323377 is a prime.

It is a super-2 number, since 2×323381² = 209150542322, which contains 22 as substring.

Together with 323383, it forms a pair of twin primes.

It is a Chen prime.

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 323381.

It is not a weakly prime, because it can be changed into another prime (323383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161690 + 161691.

It is an arithmetic number, because the mean of its divisors is an integer number (161691).

2³²³³⁸¹ is an apocalyptic number.

It is an amenable number.

323381 is a deficient number, since it is larger than the sum of its proper divisors (1).

323381 is an equidigital number, since it uses as much as digits as its factorization.

323381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 323381 is about 568.6659828054. The cubic root of 323381 is about 68.6390872791.

The spelling of 323381 in words is "three hundred twenty-three thousand, three hundred eighty-one".