230511161 has 2 divisors, whose sum is σ = 230511162. Its totient is φ = 230511160.

The previous prime is 230511139. The next prime is 230511167. The reversal of 230511161 is 161115032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230462761 + 48400 = 15181^2 + 220^2 .

It is a cyclic number.

It is not a de Polignac number, because 230511161 - 2¹⁴ = 230494777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (230511167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115255580 + 115255581.

It is an arithmetic number, because the mean of its divisors is an integer number (115255581).

Almost surely, 2^230511161 is an apocalyptic number.

It is an amenable number.

230511161 is a deficient number, since it is larger than the sum of its proper divisors (1).

230511161 is an equidigital number, since it uses as much as digits as its factorization.

230511161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 230511161 is about 15182.5940141993. The cubic root of 230511161 is about 613.1461223349.

Adding to 230511161 its reverse (161115032), we get a palindrome (391626193).

The spelling of 230511161 in words is "two hundred thirty million, five hundred eleven thousand, one hundred sixty-one".