230534989 has 2 divisors, whose sum is σ = 230534990. Its totient is φ = 230534988.

The previous prime is 230534971. The next prime is 230535023. The reversal of 230534989 is 989435032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 205434889 + 25100100 = 14333^2 + 5010^2 .

It is a cyclic number.

It is not a de Polignac number, because 230534989 - 2⁷ = 230534861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230534959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115267494 + 115267495.

It is an arithmetic number, because the mean of its divisors is an integer number (115267495).

Almost surely, 2^230534989 is an apocalyptic number.

It is an amenable number.

230534989 is a deficient number, since it is larger than the sum of its proper divisors (1).

230534989 is an equidigital number, since it uses as much as digits as its factorization.

230534989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The square root of 230534989 is about 15183.3787083113. The cubic root of 230534989 is about 613.1672486329.

Adding to 230534989 its sum of digits (43), we get a palindrome (230535032).

The spelling of 230534989 in words is "two hundred thirty million, five hundred thirty-four thousand, nine hundred eighty-nine".