230787251 has 2 divisors, whose sum is σ = 230787252. Its totient is φ = 230787250.

The previous prime is 230787239. The next prime is 230787253. The reversal of 230787251 is 152787032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230787251 is a prime.

Together with 230787253, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (230787253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115393625 + 115393626.

It is an arithmetic number, because the mean of its divisors is an integer number (115393626).

Almost surely, 2^230787251 is an apocalyptic number.

230787251 is a deficient number, since it is larger than the sum of its proper divisors (1).

230787251 is an equidigital number, since it uses as much as digits as its factorization.

230787251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 230787251 is about 15191.6836130825. The cubic root of 230787251 is about 613.3908190513.

The spelling of 230787251 in words is "two hundred thirty million, seven hundred eighty-seven thousand, two hundred fifty-one".