111983 has 4 divisors (see below), whose sum is σ = 113088. Its totient is φ = 110880.

The previous prime is 111977. The next prime is 111997. The reversal of 111983 is 389111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 111983 - 2⁶ = 111919 is a prime.

It is a Duffinian number.

It is a plaindrome in base 6.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 111983.

It is not an unprimeable number, because it can be changed into a prime (111913) 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, 383 + ... + 608.

It is an arithmetic number, because the mean of its divisors is an integer number (28272).

2¹¹¹⁹⁸³ is an apocalyptic number.

111983 is a deficient number, since it is larger than the sum of its proper divisors (1105).

111983 is an equidigital number, since it uses as much as digits as its factorization.

111983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104.

The product of its digits is 216, while the sum is 23.

The square root of 111983 is about 334.6386110418. The cubic root of 111983 is about 48.2004063257.

The spelling of 111983 in words is "one hundred eleven thousand, nine hundred eighty-three".