323040331 has 2 divisors, whose sum is σ = 323040332. Its totient is φ = 323040330.

The previous prime is 323040317. The next prime is 323040343. The reversal of 323040331 is 133040323.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 323040331 - 2⁷ = 323040203 is a prime.

It is a super-2 number, since 2×323040331² = 208710110905179122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 323040299 and 323040308.

It is not a weakly prime, because it can be changed into another prime (323040371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161520165 + 161520166.

It is an arithmetic number, because the mean of its divisors is an integer number (161520166).

Almost surely, 2^323040331 is an apocalyptic number.

323040331 is a deficient number, since it is larger than the sum of its proper divisors (1).

323040331 is an equidigital number, since it uses as much as digits as its factorization.

323040331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 323040331 is about 17973.3227590226. The cubic root of 323040331 is about 686.1497596239.

Adding to 323040331 its reverse (133040323), we get a palindrome (456080654).

The spelling of 323040331 in words is "three hundred twenty-three million, forty thousand, three hundred thirty-one".