323121331 has 16 divisors (see below), whose sum is σ = 355199488. Its totient is φ = 292118400.

The previous prime is 323121311. The next prime is 323121341. The reversal of 323121331 is 133121323.

It is a cyclic number.

It is not a de Polignac number, because 323121331 - 2⁵ = 323121299 is a prime.

It is a super-2 number, since 2×323121331² = 208814789094423122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 323121299 and 323121308.

It is not an unprimeable number, because it can be changed into a prime (323121311) 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 15 ways as a sum of consecutive naturals, for example, 218926 + ... + 220396.

It is an arithmetic number, because the mean of its divisors is an integer number (22199968).

Almost surely, 2^323121331 is an apocalyptic number.

323121331 is a deficient number, since it is larger than the sum of its proper divisors (32078157).

323121331 is a wasteful number, since it uses less digits than its factorization.

323121331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1822.

The product of its digits is 324, while the sum is 19.

The square root of 323121331 is about 17975.5759573929. The cubic root of 323121331 is about 686.2071038423.

Adding to 323121331 its reverse (133121323), we get a palindrome (456242654).

The spelling of 323121331 in words is "three hundred twenty-three million, one hundred twenty-one thousand, three hundred thirty-one".