13117105 has 4 divisors (see below), whose sum is σ = 15740532. Its totient is φ = 10493680.

The previous prime is 13117103. The next prime is 13117109. The reversal of 13117105 is 50171131.

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 2509056 + 10608049 = 1584^2 + 3257^2 .

It is not a de Polignac number, because 13117105 - 2¹ = 13117103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13117103) 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, 1311706 + ... + 1311715.

It is an arithmetic number, because the mean of its divisors is an integer number (3935133).

Almost surely, 2^13117105 is an apocalyptic number.

It is an amenable number.

13117105 is a deficient number, since it is larger than the sum of its proper divisors (2623427).

13117105 is an equidigital number, since it uses as much as digits as its factorization.

13117105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623426.

The product of its (nonzero) digits is 105, while the sum is 19.

The square root of 13117105 is about 3621.7544091227. The cubic root of 13117105 is about 235.8373927750.

Adding to 13117105 its reverse (50171131), we get a palindrome (63288236).

The spelling of 13117105 in words is "thirteen million, one hundred seventeen thousand, one hundred five".