230213891 has 2 divisors, whose sum is σ = 230213892. Its totient is φ = 230213890.

The previous prime is 230213857. The next prime is 230213911. The reversal of 230213891 is 198312032.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-230213891 is a prime.

It is not a weakly prime, because it can be changed into another prime (230213591) 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, 115106945 + 115106946.

It is an arithmetic number, because the mean of its divisors is an integer number (115106946).

Almost surely, 2^230213891 is an apocalyptic number.

230213891 is a deficient number, since it is larger than the sum of its proper divisors (1).

230213891 is an equidigital number, since it uses as much as digits as its factorization.

230213891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 230213891 is about 15172.8010268375. The cubic root of 230213891 is about 612.8824353827.

The spelling of 230213891 in words is "two hundred thirty million, two hundred thirteen thousand, eight hundred ninety-one".