111311103 has 4 divisors (see below), whose sum is σ = 148414808. Its totient is φ = 74207400.

The previous prime is 111311029. The next prime is 111311131. The reversal of 111311103 is 301113111.

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

It is not a de Polignac number, because 111311103 - 2⁸ = 111310847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111311003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18551848 + ... + 18551853.

It is an arithmetic number, because the mean of its divisors is an integer number (37103702).

Almost surely, 2^111311103 is an apocalyptic number.

111311103 is a deficient number, since it is larger than the sum of its proper divisors (37103705).

111311103 is an equidigital number, since it uses as much as digits as its factorization.

111311103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37103704.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 111311103 is about 10550.4077172401. The cubic root of 111311103 is about 481.0381221019.

Adding to 111311103 its reverse (301113111), we get a palindrome (412424214).

The spelling of 111311103 in words is "one hundred eleven million, three hundred eleven thousand, one hundred three".