111841 has 4 divisors (see below), whose sum is σ = 113092. Its totient is φ = 110592.

The previous prime is 111833. The next prime is 111847. The reversal of 111841 is 148111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 148111 = 37 ⋅4003.

It can be written as a sum of positive squares in 2 ways, for example, as 70225 + 41616 = 265^2 + 204^2 .

It is a 3-Lehmer number, since φ(111841) divides (111841-1)³.

It is a cyclic number.

It is not a de Polignac number, because 111841 - 2³ = 111833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111847) 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, 480 + ... + 673.

It is an arithmetic number, because the mean of its divisors is an integer number (28273).

2¹¹¹⁸⁴¹ is an apocalyptic number.

It is an amenable number.

111841 is a deficient number, since it is larger than the sum of its proper divisors (1251).

111841 is an equidigital number, since it uses as much as digits as its factorization.

111841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1250.

The product of its digits is 32, while the sum is 16.

The square root of 111841 is about 334.4263745580. The cubic root of 111841 is about 48.1800242058.

Adding to 111841 its reverse (148111), we get a palindrome (259952).

The spelling of 111841 in words is "one hundred eleven thousand, eight hundred forty-one".