230149987 has 2 divisors, whose sum is σ = 230149988. Its totient is φ = 230149986.

The previous prime is 230149963. The next prime is 230150047. The reversal of 230149987 is 789941032.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230149987 is a prime.

It is a super-2 number, since 2×230149987² = 105938033032200338, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (230149957) 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, 115074993 + 115074994.

It is an arithmetic number, because the mean of its divisors is an integer number (115074994).

Almost surely, 2^230149987 is an apocalyptic number.

230149987 is a deficient number, since it is larger than the sum of its proper divisors (1).

230149987 is an equidigital number, since it uses as much as digits as its factorization.

230149987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 230149987 is about 15170.6950071511. The cubic root of 230149987 is about 612.8257210761.

The spelling of 230149987 in words is "two hundred thirty million, one hundred forty-nine thousand, nine hundred eighty-seven".