13631117 has 2 divisors, whose sum is σ = 13631118. Its totient is φ = 13631116.

The previous prime is 13631099. The next prime is 13631143. The reversal of 13631117 is 71113631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13586596 + 44521 = 3686^2 + 211^2 .

It is a cyclic number.

It is not a de Polignac number, because 13631117 - 2⁶ = 13631053 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 13631092 and 13631101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13631197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6815558 + 6815559.

It is an arithmetic number, because the mean of its divisors is an integer number (6815559).

Almost surely, 2^13631117 is an apocalyptic number.

It is an amenable number.

13631117 is a deficient number, since it is larger than the sum of its proper divisors (1).

13631117 is an equidigital number, since it uses as much as digits as its factorization.

13631117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 378, while the sum is 23.

The square root of 13631117 is about 3692.0342631130. The cubic root of 13631117 is about 238.8785468591.

Adding to 13631117 its reverse (71113631), we get a palindrome (84744748).

The spelling of 13631117 in words is "thirteen million, six hundred thirty-one thousand, one hundred seventeen".