4431120321 has 8 divisors (see below), whose sum is σ = 6219116320. Its totient is φ = 2798602272.

The previous prime is 4431120319. The next prime is 4431120401. The reversal of 4431120321 is 1230211344.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4431120321 - 2¹ = 4431120319 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4431122321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38869420 + ... + 38869533.

It is an arithmetic number, because the mean of its divisors is an integer number (777389540).

Almost surely, 2^4431120321 is an apocalyptic number.

It is an amenable number.

4431120321 is a deficient number, since it is larger than the sum of its proper divisors (1787995999).

4431120321 is a wasteful number, since it uses less digits than its factorization.

4431120321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77738975.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 4431120321 is about 66566.6607319310. The cubic root of 4431120321 is about 1642.4967325702.

Adding to 4431120321 its reverse (1230211344), we get a palindrome (5661331665).

The spelling of 4431120321 in words is "four billion, four hundred thirty-one million, one hundred twenty thousand, three hundred twenty-one".