230533987 has 2 divisors, whose sum is σ = 230533988. Its totient is φ = 230533986.

The previous prime is 230533969. The next prime is 230533993. The reversal of 230533987 is 789335032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230533987 is a prime.

It is not a weakly prime, because it can be changed into another prime (230533937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115266993 + 115266994.

It is an arithmetic number, because the mean of its divisors is an integer number (115266994).

Almost surely, 2^230533987 is an apocalyptic number.

230533987 is a deficient number, since it is larger than the sum of its proper divisors (1).

230533987 is an equidigital number, since it uses as much as digits as its factorization.

230533987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 40.

The square root of 230533987 is about 15183.3457116671. The cubic root of 230533987 is about 613.1663602725.

The spelling of 230533987 in words is "two hundred thirty million, five hundred thirty-three thousand, nine hundred eighty-seven".