13116205 has 4 divisors (see below), whose sum is σ = 15739452. Its totient is φ = 10492960.

The previous prime is 13116203. The next prime is 13116217. The reversal of 13116205 is 50261131.

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 4247721 + 8868484 = 2061^2 + 2978^2 .

It is not a de Polignac number, because 13116205 - 2¹ = 13116203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13116203) 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, 1311616 + ... + 1311625.

It is an arithmetic number, because the mean of its divisors is an integer number (3934863).

Almost surely, 2^13116205 is an apocalyptic number.

It is an amenable number.

13116205 is a deficient number, since it is larger than the sum of its proper divisors (2623247).

13116205 is an equidigital number, since it uses as much as digits as its factorization.

13116205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623246.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 13116205 is about 3621.6301578157. The cubic root of 13116205 is about 235.8319988382.

Adding to 13116205 its reverse (50261131), we get a palindrome (63377336).

The spelling of 13116205 in words is "thirteen million, one hundred sixteen thousand, two hundred five".