4340431321 has 2 divisors, whose sum is σ = 4340431322. Its totient is φ = 4340431320.

The previous prime is 4340431243. The next prime is 4340431357. The reversal of 4340431321 is 1231340434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4155607296 + 184824025 = 64464^2 + 13595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4340431321 is a prime.

It is not a weakly prime, because it can be changed into another prime (4340438321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2170215660 + 2170215661.

It is an arithmetic number, because the mean of its divisors is an integer number (2170215661).

Almost surely, 2^4340431321 is an apocalyptic number.

It is an amenable number.

4340431321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4340431321 is an equidigital number, since it uses as much as digits as its factorization.

4340431321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 4340431321 is about 65881.9498876589. The cubic root of 4340431321 is about 1631.2140855048.

Adding to 4340431321 its reverse (1231340434), we get a palindrome (5571771755).

The spelling of 4340431321 in words is "four billion, three hundred forty million, four hundred thirty-one thousand, three hundred twenty-one".