1131110111 has 4 divisors (see below), whose sum is σ = 1138314792. Its totient is φ = 1123905432.

The previous prime is 1131110083. The next prime is 1131110179. The reversal of 1131110111 is 1110111311.

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

It is a cyclic number.

It is not a de Polignac number, because 1131110111 - 2¹⁰ = 1131109087 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131110092 and 1131110101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131110311) 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, 3602105 + ... + 3602418.

It is an arithmetic number, because the mean of its divisors is an integer number (284578698).

Almost surely, 2^1131110111 is an apocalyptic number.

1131110111 is a deficient number, since it is larger than the sum of its proper divisors (7204681).

1131110111 is an equidigital number, since it uses as much as digits as its factorization.

1131110111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7204680.

The product of its (nonzero) digits is 3, while the sum is 11.

The square root of 1131110111 is about 33631.9804798944. The cubic root of 1131110111 is about 1041.9214082410.

Adding to 1131110111 its reverse (1110111311), we get a palindrome (2241221422).

The spelling of 1131110111 in words is "one billion, one hundred thirty-one million, one hundred ten thousand, one hundred eleven".