Adding to 111361 its reverse (163111), we get a palindrome (274472).
It is a happy number.
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, and also an emirpimes, since its reverse is a distinct semiprime: 163111 = 13 ⋅12547.
It is a 3-Lehmer number, since φ(111361) divides (111361-1)3.
It is a cyclic number.
It is a Duffinian number.
It is a congruent number.
2111361 is an apocalyptic number.
111361 is the 193-rd octagonal number.
It is an amenable number.
111361 is an equidigital number, since it uses as much as digits as its factorization.
111361 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 770.
The square root of 111361 is about 333.7079561533. The cubic root of 111361 is about 48.1109989067.
The spelling of 111361 in words is "one hundred eleven thousand, three hundred sixty-one".