13118213 has 2 divisors, whose sum is σ = 13118214. Its totient is φ = 13118212.

The previous prime is 13118207. The next prime is 13118221. The reversal of 13118213 is 31281131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7745089 + 5373124 = 2783^2 + 2318^2 .

It is a cyclic number.

It is not a de Polignac number, because 13118213 - 2⁴ = 13118197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13118243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6559106 + 6559107.

It is an arithmetic number, because the mean of its divisors is an integer number (6559107).

Almost surely, 2^13118213 is an apocalyptic number.

It is an amenable number.

13118213 is a deficient number, since it is larger than the sum of its proper divisors (1).

13118213 is an equidigital number, since it uses as much as digits as its factorization.

13118213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 144, while the sum is 20.

The square root of 13118213 is about 3621.9073704334. The cubic root of 13118213 is about 235.8440329718.

Adding to 13118213 its reverse (31281131), we get a palindrome (44399344).

It can be divided in two parts, 13118 and 213, that added together give a palindrome (13331).

The spelling of 13118213 in words is "thirteen million, one hundred eighteen thousand, two hundred thirteen".