230505871 has 2 divisors, whose sum is σ = 230505872. Its totient is φ = 230505870.

The previous prime is 230505859. The next prime is 230505881. The reversal of 230505871 is 178505032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230505871 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230505881) 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, 115252935 + 115252936.

It is an arithmetic number, because the mean of its divisors is an integer number (115252936).

Almost surely, 2^230505871 is an apocalyptic number.

230505871 is a deficient number, since it is larger than the sum of its proper divisors (1).

230505871 is an equidigital number, since it uses as much as digits as its factorization.

230505871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 230505871 is about 15182.4198005456. The cubic root of 230505871 is about 613.1414319362.

The spelling of 230505871 in words is "two hundred thirty million, five hundred five thousand, eight hundred seventy-one".