108111 has 4 divisors (see below), whose sum is σ = 144152. Its totient is φ = 72072.

The previous prime is 108109. The next prime is 108127. The reversal of 108111 is 111801.

It is a happy number.

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

It is not a de Polignac number, because 108111 - 2¹ = 108109 is a prime.

It is a D-number.

It is a Duffinian number.

108111 is a modest number, since divided by 111 gives 108 as remainder.

108111 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (108131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18016 + ... + 18021.

It is an arithmetic number, because the mean of its divisors is an integer number (36038).

2¹⁰⁸¹¹¹ is an apocalyptic number.

108111 is a deficient number, since it is larger than the sum of its proper divisors (36041).

108111 is an equidigital number, since it uses as much as digits as its factorization.

108111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36040.

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 108111 is about 328.8023722542. The cubic root of 108111 is about 47.6383409281.

Adding to 108111 its reverse (111801), we get a palindrome (219912).

The spelling of 108111 in words is "one hundred eight thousand, one hundred eleven".