13631369 has 2 divisors, whose sum is σ = 13631370. Its totient is φ = 13631368.

The previous prime is 13631347. The next prime is 13631377. The reversal of 13631369 is 96313631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13053769 + 577600 = 3613^2 + 760^2 .

It is an emirp because it is prime and its reverse (96313631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13631369 - 2¹⁶ = 13565833 is a prime.

It is a super-2 number, since 2×13631369² = 371628441628322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13631069) 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, 6815684 + 6815685.

It is an arithmetic number, because the mean of its divisors is an integer number (6815685).

Almost surely, 2^13631369 is an apocalyptic number.

It is an amenable number.

13631369 is a deficient number, since it is larger than the sum of its proper divisors (1).

13631369 is an equidigital number, since it uses as much as digits as its factorization.

13631369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8748, while the sum is 32.

The square root of 13631369 is about 3692.0683904825. The cubic root of 13631369 is about 238.8800189083.

The spelling of 13631369 in words is "thirteen million, six hundred thirty-one thousand, three hundred sixty-nine".