1113312111 has 4 divisors (see below), whose sum is σ = 1484416152. Its totient is φ = 742208072.

The previous prime is 1113312091. The next prime is 1113312119. The reversal of 1113312111 is 1112133111.

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 1113312111 - 2⁹ = 1113311599 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1113312119) 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, 185552016 + ... + 185552021.

It is an arithmetic number, because the mean of its divisors is an integer number (371104038).

Almost surely, 2^1113312111 is an apocalyptic number.

1113312111 is a deficient number, since it is larger than the sum of its proper divisors (371104041).

1113312111 is an equidigital number, since it uses as much as digits as its factorization.

1113312111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371104040.

The product of its digits is 18, while the sum is 15.

The square root of 1113312111 is about 33366.3319979886. The cubic root of 1113312111 is about 1036.4276194073.

Adding to 1113312111 its reverse (1112133111), we get a palindrome (2225445222).

The spelling of 1113312111 in words is "one billion, one hundred thirteen million, three hundred twelve thousand, one hundred eleven".