230312081 has 2 divisors, whose sum is σ = 230312082. Its totient is φ = 230312080.

The previous prime is 230312077. The next prime is 230312099. The reversal of 230312081 is 180213032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226231681 + 4080400 = 15041^2 + 2020^2 .

It is a cyclic number.

It is not a de Polignac number, because 230312081 - 2² = 230312077 is a prime.

It is a super-2 number, since 2×230312081² = 106087309309101122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (230312011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115156040 + 115156041.

It is an arithmetic number, because the mean of its divisors is an integer number (115156041).

Almost surely, 2^230312081 is an apocalyptic number.

It is an amenable number.

230312081 is a deficient number, since it is larger than the sum of its proper divisors (1).

230312081 is an equidigital number, since it uses as much as digits as its factorization.

230312081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 230312081 is about 15176.0364061240. The cubic root of 230312081 is about 612.9695578008.

The spelling of 230312081 in words is "two hundred thirty million, three hundred twelve thousand, eighty-one".