13112118 has 40 divisors (see below), whose sum is σ = 30404880. Its totient is φ = 4218480.

The previous prime is 13112111. The next prime is 13112129. The reversal of 13112118 is 81121131.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 13112118.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13112111) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3303 + ... + 6093.

It is an arithmetic number, because the mean of its divisors is an integer number (760122).

Almost surely, 2^13112118 is an apocalyptic number.

13112118 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 13112118, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15202440).

13112118 is an abundant number, since it is smaller than the sum of its proper divisors (17292762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13112118 is a wasteful number, since it uses less digits than its factorization.

13112118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834 (or 2825 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

The square root of 13112118 is about 3621.0658651839. The cubic root of 13112118 is about 235.8075012667.

Adding to 13112118 its reverse (81121131), we get a palindrome (94233249).

The spelling of 13112118 in words is "thirteen million, one hundred twelve thousand, one hundred eighteen".