230648009 has 2 divisors, whose sum is σ = 230648010. Its totient is φ = 230648008.

The previous prime is 230647987. The next prime is 230648021. The reversal of 230648009 is 900846032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 228765625 + 1882384 = 15125^2 + 1372^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230648009 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (230648069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115324004 + 115324005.

It is an arithmetic number, because the mean of its divisors is an integer number (115324005).

Almost surely, 2^230648009 is an apocalyptic number.

It is an amenable number.

230648009 is a deficient number, since it is larger than the sum of its proper divisors (1).

230648009 is an equidigital number, since it uses as much as digits as its factorization.

230648009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 230648009 is about 15187.1000852697. The cubic root of 230648009 is about 613.2674342071.

The spelling of 230648009 in words is "two hundred thirty million, six hundred forty-eight thousand, nine".