230871811 has 4 divisors (see below), whose sum is σ = 232068232. Its totient is φ = 229675392.

The previous prime is 230871791. The next prime is 230871827. The reversal of 230871811 is 118178032.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 230871811 - 2¹¹ = 230869763 is a prime.

It is a super-2 number, since 2×230871811² = 106603586228839442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230871841) 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 in 3 ways as a sum of consecutive naturals, for example, 597921 + ... + 598306.

It is an arithmetic number, because the mean of its divisors is an integer number (58017058).

Almost surely, 2^230871811 is an apocalyptic number.

230871811 is a deficient number, since it is larger than the sum of its proper divisors (1196421).

230871811 is a wasteful number, since it uses less digits than its factorization.

230871811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196420.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 230871811 is about 15194.4664598662. The cubic root of 230871811 is about 613.4657249714.

The spelling of 230871811 in words is "two hundred thirty million, eight hundred seventy-one thousand, eight hundred eleven".