4432431121 has 2 divisors, whose sum is σ = 4432431122. Its totient is φ = 4432431120.

The previous prime is 4432431071. The next prime is 4432431139. The reversal of 4432431121 is 1211342344.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4311760896 + 120670225 = 65664^2 + 10985^2 .

It is a cyclic number.

It is not a de Polignac number, because 4432431121 - 2¹⁵ = 4432398353 is a prime.

It is not a weakly prime, because it can be changed into another prime (4432431161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2216215560 + 2216215561.

It is an arithmetic number, because the mean of its divisors is an integer number (2216215561).

Almost surely, 2^4432431121 is an apocalyptic number.

It is an amenable number.

4432431121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4432431121 is an equidigital number, since it uses as much as digits as its factorization.

4432431121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 25.

The square root of 4432431121 is about 66576.5057734333. The cubic root of 4432431121 is about 1642.6586759991.

Adding to 4432431121 its reverse (1211342344), we get a palindrome (5643773465).

The spelling of 4432431121 in words is "four billion, four hundred thirty-two million, four hundred thirty-one thousand, one hundred twenty-one".