230111209 has 2 divisors, whose sum is σ = 230111210. Its totient is φ = 230111208.

The previous prime is 230111197. The next prime is 230111227. The reversal of 230111209 is 902111032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174160809 + 55950400 = 13197^2 + 7480^2 .

It is a cyclic number.

It is not a de Polignac number, because 230111209 - 2⁷ = 230111081 is a prime.

It is not a weakly prime, because it can be changed into another prime (230111239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115055604 + 115055605.

It is an arithmetic number, because the mean of its divisors is an integer number (115055605).

Almost surely, 2^230111209 is an apocalyptic number.

It is an amenable number.

230111209 is a deficient number, since it is larger than the sum of its proper divisors (1).

230111209 is an equidigital number, since it uses as much as digits as its factorization.

230111209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 230111209 is about 15169.4168971652. The cubic root of 230111209 is about 612.7913007821.

The spelling of 230111209 in words is "two hundred thirty million, one hundred eleven thousand, two hundred nine".