13266431 has 2 divisors, whose sum is σ = 13266432. Its totient is φ = 13266430.

The previous prime is 13266413. The next prime is 13266433. The reversal of 13266431 is 13466231.

Together with previous prime (13266413) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13266431 - 2²² = 9072127 is a prime.

It is a super-2 number, since 2×13266431² = 351996382955522, which contains 22 as substring.

Together with 13266433, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13266431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13266433) 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, 6633215 + 6633216.

It is an arithmetic number, because the mean of its divisors is an integer number (6633216).

Almost surely, 2^13266431 is an apocalyptic number.

13266431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13266431 is an equidigital number, since it uses as much as digits as its factorization.

13266431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 26.

The square root of 13266431 is about 3642.3112167963. The cubic root of 13266431 is about 236.7289476591.

The spelling of 13266431 in words is "thirteen million, two hundred sixty-six thousand, four hundred thirty-one".