30323309 has 2 divisors, whose sum is σ = 30323310. Its totient is φ = 30323308.

The previous prime is 30323287. The next prime is 30323327. The reversal of 30323309 is 90332303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27772900 + 2550409 = 5270^2 + 1597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30323309 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30323339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15161654 + 15161655.

It is an arithmetic number, because the mean of its divisors is an integer number (15161655).

Almost surely, 2^30323309 is an apocalyptic number.

It is an amenable number.

30323309 is a deficient number, since it is larger than the sum of its proper divisors (1).

30323309 is an equidigital number, since it uses as much as digits as its factorization.

30323309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 23.

The square root of 30323309 is about 5506.6604217075. The cubic root of 30323309 is about 311.8354826550.

The spelling of 30323309 in words is "thirty million, three hundred twenty-three thousand, three hundred nine".