230242189 has 2 divisors, whose sum is σ = 230242190. Its totient is φ = 230242188.

The previous prime is 230242153. The next prime is 230242193. The reversal of 230242189 is 981242032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185913225 + 44328964 = 13635^2 + 6658^2 .

It is a cyclic number.

It is not a de Polignac number, because 230242189 - 2¹⁷ = 230111117 is a prime.

It is a super-2 number, since 2×230242189² = 106022931191023442, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 230242189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230242109) 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, 115121094 + 115121095.

It is an arithmetic number, because the mean of its divisors is an integer number (115121095).

Almost surely, 2^230242189 is an apocalyptic number.

It is an amenable number.

230242189 is a deficient number, since it is larger than the sum of its proper divisors (1).

230242189 is an equidigital number, since it uses as much as digits as its factorization.

230242189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 230242189 is about 15173.7335221098. The cubic root of 230242189 is about 612.9075462865.

The spelling of 230242189 in words is "two hundred thirty million, two hundred forty-two thousand, one hundred eighty-nine".