7230000209 has 2 divisors, whose sum is σ = 7230000210. Its totient is φ = 7230000208.

The previous prime is 7230000161. The next prime is 7230000221. The reversal of 7230000209 is 9020000327.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5882890000 + 1347110209 = 76700^2 + 36703^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7230000209 is a prime.

It is not a weakly prime, because it can be changed into another prime (7230000109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3615000104 + 3615000105.

It is an arithmetic number, because the mean of its divisors is an integer number (3615000105).

Almost surely, 2^7230000209 is an apocalyptic number.

It is an amenable number.

7230000209 is a deficient number, since it is larger than the sum of its proper divisors (1).

7230000209 is an equidigital number, since it uses as much as digits as its factorization.

7230000209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 7230000209 is about 85029.4079069118. The cubic root of 7230000209 is about 1933.6569865174.

The spelling of 7230000209 in words is "seven billion, two hundred thirty million, two hundred nine", and thus it is an aban number.