13181113 has 8 divisors (see below), whose sum is σ = 14429376. Its totient is φ = 11941200.

The previous prime is 13181083. The next prime is 13181123. The reversal of 13181113 is 31118131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13181113 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (13181123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1495 + ... + 5347.

It is an arithmetic number, because the mean of its divisors is an integer number (1803672).

Almost surely, 2^13181113 is an apocalyptic number.

It is an amenable number.

13181113 is a deficient number, since it is larger than the sum of its proper divisors (1248263).

13181113 is a wasteful number, since it uses less digits than its factorization.

13181113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4175.

The product of its digits is 72, while the sum is 19.

The square root of 13181113 is about 3630.5802566532. The cubic root of 13181113 is about 236.2203785076.

Adding to 13181113 its reverse (31118131), we get a palindrome (44299244).

The spelling of 13181113 in words is "thirteen million, one hundred eighty-one thousand, one hundred thirteen".