It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-111311 is a prime.
It is a Duffinian number.
It is a congruent number.
2111311 is an apocalyptic number.
111311 is an equidigital number, since it uses as much as digits as its factorization.
111311 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1488.
The square root of 111311 is about 333.6330319378. The cubic root of 111311 is about 48.1037973728.
Adding to 111311 its reverse (113111), we get a palindrome (224422).
The spelling of 111311 in words is "one hundred eleven thousand, three hundred eleven", and thus it is an iban number.