320344304331 has 16 divisors (see below), whose sum is σ = 431353278720. Its totient is φ = 211449876000.

The previous prime is 320344304311. The next prime is 320344304351. The reversal of 320344304331 is 133403443023.

It is an interprime number because it is at equal distance from previous prime (320344304311) and next prime (320344304351).

It is not a de Polignac number, because 320344304331 - 2⁵ = 320344304299 is a prime.

It is a super-2 number, since 2×320344304331² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320344304311) 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, 1605580 + ... + 1794038.

It is an arithmetic number, because the mean of its divisors is an integer number (26959579920).

Almost surely, 2^320344304331 is an apocalyptic number.

320344304331 is a deficient number, since it is larger than the sum of its proper divisors (111008974389).

320344304331 is a wasteful number, since it uses less digits than its factorization.

320344304331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194066.

The product of its (nonzero) digits is 31104, while the sum is 30.

Adding to 320344304331 its reverse (133403443023), we get a palindrome (453747747354).

The spelling of 320344304331 in words is "three hundred twenty billion, three hundred forty-four million, three hundred four thousand, three hundred thirty-one".