230239987 has 2 divisors, whose sum is σ = 230239988. Its totient is φ = 230239986.

The previous prime is 230239979. The next prime is 230240033. The reversal of 230239987 is 789932032.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 230239987 - 2³ = 230239979 is a prime.

It is a super-2 number, since 2×230239987² = 106020903227520338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (230239957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115119993 + 115119994.

It is an arithmetic number, because the mean of its divisors is an integer number (115119994).

Almost surely, 2^230239987 is an apocalyptic number.

230239987 is a deficient number, since it is larger than the sum of its proper divisors (1).

230239987 is an equidigital number, since it uses as much as digits as its factorization.

230239987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 230239987 is about 15173.6609623387. The cubic root of 230239987 is about 612.9055923632.

The spelling of 230239987 in words is "two hundred thirty million, two hundred thirty-nine thousand, nine hundred eighty-seven".