230291891 has 8 divisors (see below), whose sum is σ = 232081200. Its totient is φ = 228508192.

The previous prime is 230291881. The next prime is 230291921. The reversal of 230291891 is 198192032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 230291891 - 2⁶ = 230291827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230291881) 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 in 7 ways as a sum of consecutive naturals, for example, 117185 + ... + 119133.

It is an arithmetic number, because the mean of its divisors is an integer number (29010150).

Almost surely, 2^230291891 is an apocalyptic number.

230291891 is a deficient number, since it is larger than the sum of its proper divisors (1789309).

230291891 is a wasteful number, since it uses less digits than its factorization.

230291891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805.

The product of its (nonzero) digits is 7776, while the sum is 35.

The square root of 230291891 is about 15175.3711980959. The cubic root of 230291891 is about 612.9516455591.

The spelling of 230291891 in words is "two hundred thirty million, two hundred ninety-one thousand, eight hundred ninety-one".