323320312331 has 4 divisors (see below), whose sum is σ = 323324087064. Its totient is φ = 323316537600.

The previous prime is 323320312327. The next prime is 323320312349. The reversal of 323320312331 is 133213023323.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 323320312331 - 2² = 323320312327 is a prime.

It is a super-2 number, since 2×323320312331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 323320312331.

It is not an unprimeable number, because it can be changed into a prime (323320312321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1755830 + ... + 1931211.

It is an arithmetic number, because the mean of its divisors is an integer number (80831021766).

Almost surely, 2^323320312331 is an apocalyptic number.

323320312331 is a deficient number, since it is larger than the sum of its proper divisors (3774733).

323320312331 is an equidigital number, since it uses as much as digits as its factorization.

323320312331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3774732.

The product of its (nonzero) digits is 5832, while the sum is 26.

Adding to 323320312331 its reverse (133213023323), we get a palindrome (456533335654).

The spelling of 323320312331 in words is "three hundred twenty-three billion, three hundred twenty million, three hundred twelve thousand, three hundred thirty-one".