230123989 has 2 divisors, whose sum is σ = 230123990. Its totient is φ = 230123988.

The previous prime is 230123987. The next prime is 230124001. The reversal of 230123989 is 989321032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171479025 + 58644964 = 13095^2 + 7658^2 .

It is a cyclic number.

It is not a de Polignac number, because 230123989 - 2¹ = 230123987 is a prime.

Together with 230123987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230123981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115061994 + 115061995.

It is an arithmetic number, because the mean of its divisors is an integer number (115061995).

Almost surely, 2^230123989 is an apocalyptic number.

It is an amenable number.

230123989 is a deficient number, since it is larger than the sum of its proper divisors (1).

230123989 is an equidigital number, since it uses as much as digits as its factorization.

230123989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 230123989 is about 15169.8381336124. The cubic root of 230123989 is about 612.8026450475.

The spelling of 230123989 in words is "two hundred thirty million, one hundred twenty-three thousand, nine hundred eighty-nine".