30326209 has 2 divisors, whose sum is σ = 30326210. Its totient is φ = 30326208.

The previous prime is 30326201. The next prime is 30326221. The reversal of 30326209 is 90262303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25725184 + 4601025 = 5072^2 + 2145^2 .

It is an emirp because it is prime and its reverse (90262303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30326209 - 2³ = 30326201 is a prime.

It is not a weakly prime, because it can be changed into another prime (30326201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15163104 + 15163105.

It is an arithmetic number, because the mean of its divisors is an integer number (15163105).

Almost surely, 2^30326209 is an apocalyptic number.

It is an amenable number.

30326209 is a deficient number, since it is larger than the sum of its proper divisors (1).

30326209 is an equidigital number, since it uses as much as digits as its factorization.

30326209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 30326209 is about 5506.9237329021. The cubic root of 30326209 is about 311.8454232376.

The spelling of 30326209 in words is "thirty million, three hundred twenty-six thousand, two hundred nine".