320232331 has 2 divisors, whose sum is σ = 320232332. Its totient is φ = 320232330.

The previous prime is 320232323. The next prime is 320232337. The reversal of 320232331 is 133232023.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (133232023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320232331 - 2³ = 320232323 is a prime.

It is a super-2 number, since 2×320232331² = 205097491635387122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 320232299 and 320232308.

It is not a weakly prime, because it can be changed into another prime (320232337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160116165 + 160116166.

It is an arithmetic number, because the mean of its divisors is an integer number (160116166).

Almost surely, 2^320232331 is an apocalyptic number.

320232331 is a deficient number, since it is larger than the sum of its proper divisors (1).

320232331 is an equidigital number, since it uses as much as digits as its factorization.

320232331 is an odious number, because the sum of its binary digits is odd.

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

The square root of 320232331 is about 17895.0364906026. The cubic root of 320232331 is about 684.1558721349.

Adding to 320232331 its reverse (133232023), we get a palindrome (453464354).

The spelling of 320232331 in words is "three hundred twenty million, two hundred thirty-two thousand, three hundred thirty-one".