4431023112321 has 40 divisors (see below), whose sum is σ = 7128572484264. Its totient is φ = 2726698567680.

The previous prime is 4431023112319. The next prime is 4431023112391. The reversal of 4431023112321 is 1232113201344.

4431023112321 is a `hidden beast` number, since 4 + 4 + 310 + 2 + 311 + 2 + 32 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 852252080625 + 3578771031696 = 923175^2 + 1891764^2 .

It is not a de Polignac number, because 4431023112321 - 2¹ = 4431023112319 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4431023112391) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 59390881 + ... + 59465441.

Almost surely, 2^{4431023112321} is an apocalyptic number.

It is an amenable number.

4431023112321 is a deficient number, since it is larger than the sum of its proper divisors (2697549371943).

4431023112321 is a wasteful number, since it uses less digits than its factorization.

4431023112321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131023 (or 131014 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

Adding to 4431023112321 its reverse (1232113201344), we get a palindrome (5663136313665).

The spelling of 4431023112321 in words is "four trillion, four hundred thirty-one billion, twenty-three million, one hundred twelve thousand, three hundred twenty-one".