4312232321 has 2 divisors, whose sum is σ = 4312232322. Its totient is φ = 4312232320.

The previous prime is 4312232317. The next prime is 4312232329. The reversal of 4312232321 is 1232322134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4298244721 + 13987600 = 65561^2 + 3740^2 .

It is a cyclic number.

It is not a de Polignac number, because 4312232321 - 2² = 4312232317 is a prime.

It is not a weakly prime, because it can be changed into another prime (4312232329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2156116160 + 2156116161.

It is an arithmetic number, because the mean of its divisors is an integer number (2156116161).

Almost surely, 2^4312232321 is an apocalyptic number.

It is an amenable number.

4312232321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4312232321 is an equidigital number, since it uses as much as digits as its factorization.

4312232321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 23.

The square root of 4312232321 is about 65667.5895781168. The cubic root of 4312232321 is about 1627.6738396489.

Adding to 4312232321 its reverse (1232322134), we get a palindrome (5544554455).

The spelling of 4312232321 in words is "four billion, three hundred twelve million, two hundred thirty-two thousand, three hundred twenty-one".