320331323 has 16 divisors (see below), whose sum is σ = 365873760. Its totient is φ = 277833216.

The previous prime is 320331307. The next prime is 320331337. The reversal of 320331323 is 323133023.

It is a cyclic number.

It is not a de Polignac number, because 320331323 - 2⁴ = 320331307 is a prime.

It is a super-2 number, since 2×320331323² = 205224312989860658, 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 = 320331295 and 320331304.

It is not an unprimeable number, because it can be changed into a prime (320330323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 244436 + ... + 245742.

It is an arithmetic number, because the mean of its divisors is an integer number (22867110).

Almost surely, 2^320331323 is an apocalyptic number.

320331323 is a deficient number, since it is larger than the sum of its proper divisors (45542437).

320331323 is a wasteful number, since it uses less digits than its factorization.

320331323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2446.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 320331323 is about 17897.8021835085. The cubic root of 320331323 is about 684.2263615620.

Adding to 320331323 its reverse (323133023), we get a palindrome (643464346).

The spelling of 320331323 in words is "three hundred twenty million, three hundred thirty-one thousand, three hundred twenty-three".