230911 has 8 divisors (see below), whose sum is σ = 250560. Its totient is φ = 212704.

The previous prime is 230891. The next prime is 230929. The reversal of 230911 is 119032.

It is not a de Polignac number, because 230911 - 2¹⁷ = 99839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230941) 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 7 ways as a sum of consecutive naturals, for example, 4890 + ... + 4936.

It is an arithmetic number, because the mean of its divisors is an integer number (31320).

2²³⁰⁹¹¹ is an apocalyptic number.

230911 is a deficient number, since it is larger than the sum of its proper divisors (19649).

230911 is an frugal number, since it uses more digits than its factorization.

230911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 64 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 230911 is about 480.5319968535. The cubic root of 230911 is about 61.3500433624.

Adding to 230911 its reverse (119032), we get a palindrome (349943).

The spelling of 230911 in words is "two hundred thirty thousand, nine hundred eleven".