13131113 has 4 divisors (see below), whose sum is σ = 13583940. Its totient is φ = 12678288.

The previous prime is 13131103. The next prime is 13131127. The reversal of 13131113 is 31113131.

It is a happy number.

13131113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 9320809 + 3810304 = 3053^2 + 1952^2 .

It is a cyclic number.

It is not a de Polignac number, because 13131113 - 2⁸ = 13130857 is a prime.

It is a super-2 number, since 2×13131113² = 344852257237538, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13131103) 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, 226370 + ... + 226427.

It is an arithmetic number, because the mean of its divisors is an integer number (3395985).

Almost surely, 2^13131113 is an apocalyptic number.

It is an amenable number.

13131113 is a deficient number, since it is larger than the sum of its proper divisors (452827).

13131113 is an equidigital number, since it uses as much as digits as its factorization.

13131113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452826.

The product of its digits is 27, while the sum is 14.

The square root of 13131113 is about 3623.6877624873. The cubic root of 13131113 is about 235.9213146185.

Adding to 13131113 its reverse (31113131), we get a palindrome (44244244).

The spelling of 13131113 in words is "thirteen million, one hundred thirty-one thousand, one hundred thirteen".