4443313321 has 2 divisors, whose sum is σ = 4443313322. Its totient is φ = 4443313320.

The previous prime is 4443313319. The next prime is 4443313339. The reversal of 4443313321 is 1233133444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4351249296 + 92064025 = 65964^2 + 9595^2 .

It is a cyclic number.

It is not a de Polignac number, because 4443313321 - 2¹ = 4443313319 is a prime.

Together with 4443313319, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4443313321.

It is not a weakly prime, because it can be changed into another prime (4443313621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2221656660 + 2221656661.

It is an arithmetic number, because the mean of its divisors is an integer number (2221656661).

Almost surely, 2^4443313321 is an apocalyptic number.

It is an amenable number.

4443313321 is a deficient number, since it is larger than the sum of its proper divisors (1).

4443313321 is an equidigital number, since it uses as much as digits as its factorization.

4443313321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 28.

The square root of 4443313321 is about 66658.1827010008. The cubic root of 4443313321 is about 1644.0018915379.

Adding to 4443313321 its reverse (1233133444), we get a palindrome (5676446765).

The spelling of 4443313321 in words is "four billion, four hundred forty-three million, three hundred thirteen thousand, three hundred twenty-one".