108911 has 4 divisors (see below), whose sum is σ = 118824. Its totient is φ = 99000.

The previous prime is 108907. The next prime is 108917. The reversal of 108911 is 119801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 119801 = 11 ⋅10891.

It is not a de Polignac number, because 108911 - 2² = 108907 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 (108917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4940 + ... + 4961.

It is an arithmetic number, because the mean of its divisors is an integer number (29706).

2¹⁰⁸⁹¹¹ is an apocalyptic number.

108911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

108911 is a deficient number, since it is larger than the sum of its proper divisors (9913).

108911 is an equidigital number, since it uses as much as digits as its factorization.

108911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9912.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 108911 is about 330.0166662458. The cubic root of 108911 is about 47.7555570408.

The spelling of 108911 in words is "one hundred eight thousand, nine hundred eleven".