230310891 has 16 divisors (see below), whose sum is σ = 356037120. Its totient is φ = 146864520.

The previous prime is 230310877. The next prime is 230310919. The reversal of 230310891 is 198013032.

It is not a de Polignac number, because 230310891 - 2¹⁸ = 230048747 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (230310841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 184815 + ... + 186056.

It is an arithmetic number, because the mean of its divisors is an integer number (22252320).

Almost surely, 2^230310891 is an apocalyptic number.

230310891 is a deficient number, since it is larger than the sum of its proper divisors (125726229).

230310891 is a wasteful number, since it uses less digits than its factorization.

230310891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370903 (or 370897 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 230310891 is about 15175.9971995253. The cubic root of 230310891 is about 612.9685020811.

The spelling of 230310891 in words is "two hundred thirty million, three hundred ten thousand, eight hundred ninety-one".