4043032321 has 2 divisors, whose sum is σ = 4043032322. Its totient is φ = 4043032320.

The previous prime is 4043032319. The next prime is 4043032333. The reversal of 4043032321 is 1232303404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3607684096 + 435348225 = 60064^2 + 20865^2 .

It is a cyclic number.

It is not a de Polignac number, because 4043032321 - 2¹ = 4043032319 is a prime.

It is a super-2 number, since 2×4043032321² = 32692220697301294082, which contains 22 as substring.

Together with 4043032319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 4043032292 and 4043032301.

It is not a weakly prime, because it can be changed into another prime (4043032351) 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, 2021516160 + 2021516161.

It is an arithmetic number, because the mean of its divisors is an integer number (2021516161).

Almost surely, 2^4043032321 is an apocalyptic number.

It is an amenable number.

4043032321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4043032321 is an equidigital number, since it uses as much as digits as its factorization.

4043032321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 4043032321 is about 63584.8434849061. The cubic root of 4043032321 is about 1593.0732224166.

Adding to 4043032321 its reverse (1232303404), we get a palindrome (5275335725).

The spelling of 4043032321 in words is "four billion, forty-three million, thirty-two thousand, three hundred twenty-one".