11826431 has 2 divisors, whose sum is σ = 11826432. Its totient is φ = 11826430.

The previous prime is 11826413. The next prime is 11826433. The reversal of 11826431 is 13462811.

Together with previous prime (11826413) 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 a de Polignac number, because none of the positive numbers 2^k-11826431 is a prime.

It is a super-2 number, since 2×11826431² = 279728940395522, which contains 22 as substring.

Together with 11826433, 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 11826431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11826433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5913215 + 5913216.

It is an arithmetic number, because the mean of its divisors is an integer number (5913216).

Almost surely, 2^11826431 is an apocalyptic number.

11826431 is a deficient number, since it is larger than the sum of its proper divisors (1).

11826431 is an equidigital number, since it uses as much as digits as its factorization.

11826431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 11826431 is about 3438.9578363219. The cubic root of 11826431 is about 227.8336672865.

The spelling of 11826431 in words is "eleven million, eight hundred twenty-six thousand, four hundred thirty-one".