609019321 has 2 divisors, whose sum is σ = 609019322. Its totient is φ = 609019320.

The previous prime is 609019259. The next prime is 609019349. The reversal of 609019321 is 123910906.

609019321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 602948025 + 6071296 = 24555^2 + 2464^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-609019321 is a prime.

It is not a weakly prime, because it can be changed into another prime (609019351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304509660 + 304509661.

It is an arithmetic number, because the mean of its divisors is an integer number (304509661).

Almost surely, 2^609019321 is an apocalyptic number.

It is an amenable number.

609019321 is a deficient number, since it is larger than the sum of its proper divisors (1).

609019321 is an equidigital number, since it uses as much as digits as its factorization.

609019321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 609019321 is about 24678.3168186163. The cubic root of 609019321 is about 847.6378805901.

The spelling of 609019321 in words is "six hundred nine million, nineteen thousand, three hundred twenty-one".