230091161 has 2 divisors, whose sum is σ = 230091162. Its totient is φ = 230091160.

The previous prime is 230091119. The next prime is 230091167. The reversal of 230091161 is 161190032.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 217267600 + 12823561 = 14740^2 + 3581^2 .

It is a cyclic number.

It is not a de Polignac number, because 230091161 - 2²² = 225896857 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 (230091167) 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, 115045580 + 115045581.

It is an arithmetic number, because the mean of its divisors is an integer number (115045581).

Almost surely, 2^230091161 is an apocalyptic number.

It is an amenable number.

230091161 is a deficient number, since it is larger than the sum of its proper divisors (1).

230091161 is an equidigital number, since it uses as much as digits as its factorization.

230091161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 230091161 is about 15168.7560795208. The cubic root of 230091161 is about 612.7735041743.

The spelling of 230091161 in words is "two hundred thirty million, ninety-one thousand, one hundred sixty-one".