3204304021 has 2 divisors, whose sum is σ = 3204304022. Its totient is φ = 3204304020.

The previous prime is 3204303979. The next prime is 3204304027. The reversal of 3204304021 is 1204034023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2897668900 + 306635121 = 53830^2 + 17511^2 .

It is a cyclic number.

It is not a de Polignac number, because 3204304021 - 2¹¹ = 3204301973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3204304021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3204304027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1602152010 + 1602152011.

It is an arithmetic number, because the mean of its divisors is an integer number (1602152011).

Almost surely, 2^3204304021 is an apocalyptic number.

It is an amenable number.

3204304021 is a deficient number, since it is larger than the sum of its proper divisors (1).

3204304021 is an equidigital number, since it uses as much as digits as its factorization.

3204304021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 3204304021 is about 56606.5722420992. The cubic root of 3204304021 is about 1474.2729763465.

Adding to 3204304021 its reverse (1204034023), we get a palindrome (4408338044).

The spelling of 3204304021 in words is "three billion, two hundred four million, three hundred four thousand, twenty-one".