13111117 has 2 divisors, whose sum is σ = 13111118. Its totient is φ = 13111116.

The previous prime is 13111093. The next prime is 13111129. The reversal of 13111117 is 71111131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12068676 + 1042441 = 3474^2 + 1021^2 .

It is a cyclic number.

It is not a de Polignac number, because 13111117 - 2¹⁵ = 13078349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13111117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13111177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6555558 + 6555559.

It is an arithmetic number, because the mean of its divisors is an integer number (6555559).

Almost surely, 2^13111117 is an apocalyptic number.

It is an amenable number.

13111117 is a deficient number, since it is larger than the sum of its proper divisors (1).

13111117 is an equidigital number, since it uses as much as digits as its factorization.

13111117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21, while the sum is 16.

The square root of 13111117 is about 3620.9276435742. The cubic root of 13111117 is about 235.8015004738.

Adding to 13111117 its reverse (71111131), we get a palindrome (84222248).

The spelling of 13111117 in words is "thirteen million, one hundred eleven thousand, one hundred seventeen".