30385109 has 2 divisors, whose sum is σ = 30385110. Its totient is φ = 30385108.

The previous prime is 30385099. The next prime is 30385129. The reversal of 30385109 is 90158303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30217009 + 168100 = 5497^2 + 410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30385109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30385129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15192554 + 15192555.

It is an arithmetic number, because the mean of its divisors is an integer number (15192555).

Almost surely, 2^30385109 is an apocalyptic number.

It is an amenable number.

30385109 is a deficient number, since it is larger than the sum of its proper divisors (1).

30385109 is an equidigital number, since it uses as much as digits as its factorization.

30385109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 30385109 is about 5512.2689520741. The cubic root of 30385109 is about 312.0471828983.

The spelling of 30385109 in words is "thirty million, three hundred eighty-five thousand, one hundred nine".