304608020209 has 2 divisors, whose sum is σ = 304608020210. Its totient is φ = 304608020208.

The previous prime is 304608020179. The next prime is 304608020243. The reversal of 304608020209 is 902020806403.

It is an a-pointer prime, because the next prime (304608020243) can be obtained adding 304608020209 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196545922225 + 108062097984 = 443335^2 + 328728^2 .

It is an emirp because it is prime and its reverse (902020806403) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 304608020209 - 2¹³ = 304608012017 is a prime.

It is not a weakly prime, because it can be changed into another prime (304608020309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152304010104 + 152304010105.

It is an arithmetic number, because the mean of its divisors is an integer number (152304010105).

Almost surely, 2^304608020209 is an apocalyptic number.

It is an amenable number.

304608020209 is a deficient number, since it is larger than the sum of its proper divisors (1).

304608020209 is an equidigital number, since it uses as much as digits as its factorization.

304608020209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 34.

The spelling of 304608020209 in words is "three hundred four billion, six hundred eight million, twenty thousand, two hundred nine".