13667231 has 2 divisors, whose sum is σ = 13667232. Its totient is φ = 13667230.

The previous prime is 13667209. The next prime is 13667239. The reversal of 13667231 is 13276631.

It is a strong prime.

It is an emirp because it is prime and its reverse (13276631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13667231 - 2¹⁸ = 13405087 is a prime.

It is a super-2 number, since 2×13667231² = 373586406414722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13667194 and 13667203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13667239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6833615 + 6833616.

It is an arithmetic number, because the mean of its divisors is an integer number (6833616).

Almost surely, 2^13667231 is an apocalyptic number.

13667231 is a deficient number, since it is larger than the sum of its proper divisors (1).

13667231 is an equidigital number, since it uses as much as digits as its factorization.

13667231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 29.

The square root of 13667231 is about 3696.9218276831. The cubic root of 13667231 is about 239.0893207922.

The spelling of 13667231 in words is "thirteen million, six hundred sixty-seven thousand, two hundred thirty-one".