230143889 has 2 divisors, whose sum is σ = 230143890. Its totient is φ = 230143888.

The previous prime is 230143877. The next prime is 230143919. The reversal of 230143889 is 988341032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156750400 + 73393489 = 12520^2 + 8567^2 .

It is a cyclic number.

It is not a de Polignac number, because 230143889 - 2²⁰ = 229095313 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (230143189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115071944 + 115071945.

It is an arithmetic number, because the mean of its divisors is an integer number (115071945).

Almost surely, 2^230143889 is an apocalyptic number.

It is an amenable number.

230143889 is a deficient number, since it is larger than the sum of its proper divisors (1).

230143889 is an equidigital number, since it uses as much as digits as its factorization.

230143889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 38.

The square root of 230143889 is about 15170.4940262340. The cubic root of 230143889 is about 612.8203085995.

The spelling of 230143889 in words is "two hundred thirty million, one hundred forty-three thousand, eight hundred eighty-nine".