230565889 has 2 divisors, whose sum is σ = 230565890. Its totient is φ = 230565888.

The previous prime is 230565887. The next prime is 230565911. The reversal of 230565889 is 988565032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219543489 + 11022400 = 14817^2 + 3320^2 .

It is a cyclic number.

It is not a de Polignac number, because 230565889 - 2¹ = 230565887 is a prime.

Together with 230565887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (230565887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115282944 + 115282945.

It is an arithmetic number, because the mean of its divisors is an integer number (115282945).

Almost surely, 2^230565889 is an apocalyptic number.

It is an amenable number.

230565889 is a deficient number, since it is larger than the sum of its proper divisors (1).

230565889 is an equidigital number, since it uses as much as digits as its factorization.

230565889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 518400, while the sum is 46.

The square root of 230565889 is about 15184.3962342926. The cubic root of 230565889 is about 613.1946429149.

The spelling of 230565889 in words is "two hundred thirty million, five hundred sixty-five thousand, eight hundred eighty-nine".