320331211144 has 48 divisors (see below), whose sum is σ = 702301873500. Its totient is φ = 136573452288.

The previous prime is 320331211121. The next prime is 320331211183. The reversal of 320331211144 is 441112133023.

It can be written as a sum of positive squares in 2 ways, for example, as 276846450244 + 43484760900 = 526162^2 + 208530^2 .

It is a super-2 number, since 2×320331211144² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2041369 + ... + 2192680.

Almost surely, 2^320331211144 is an apocalyptic number.

It is an amenable number.

320331211144 is an abundant number, since it is smaller than the sum of its proper divisors (381970662356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320331211144 is a wasteful number, since it uses less digits than its factorization.

320331211144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4234262 (or 4234251 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 320331211144 its reverse (441112133023), we get a palindrome (761443344167).

The spelling of 320331211144 in words is "three hundred twenty billion, three hundred thirty-one million, two hundred eleven thousand, one hundred forty-four".