230541209 has 2 divisors, whose sum is σ = 230541210. Its totient is φ = 230541208.

The previous prime is 230541137. The next prime is 230541211. The reversal of 230541209 is 902145032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134560000 + 95981209 = 11600^2 + 9797^2 .

It is a cyclic number.

It is not a de Polignac number, because 230541209 - 2⁸ = 230540953 is a prime.

Together with 230541211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (230541299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115270604 + 115270605.

It is an arithmetic number, because the mean of its divisors is an integer number (115270605).

Almost surely, 2^230541209 is an apocalyptic number.

It is an amenable number.

230541209 is a deficient number, since it is larger than the sum of its proper divisors (1).

230541209 is an equidigital number, since it uses as much as digits as its factorization.

230541209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 230541209 is about 15183.5835361749. The cubic root of 230541209 is about 613.1727631479.

The spelling of 230541209 in words is "two hundred thirty million, five hundred forty-one thousand, two hundred nine".