11427287 has 2 divisors, whose sum is σ = 11427288. Its totient is φ = 11427286.

The previous prime is 11427263. The next prime is 11427289. The reversal of 11427287 is 78272411.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11427287 - 2¹⁰ = 11426263 is a prime.

Together with 11427289, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11427289) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5713643 + 5713644.

It is an arithmetic number, because the mean of its divisors is an integer number (5713644).

Almost surely, 2^11427287 is an apocalyptic number.

11427287 is a deficient number, since it is larger than the sum of its proper divisors (1).

11427287 is an equidigital number, since it uses as much as digits as its factorization.

11427287 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 32.

The square root of 11427287 is about 3380.4270440286. The cubic root of 11427287 is about 225.2411373603.

Adding to 11427287 its reverse (78272411), we get a palindrome (89699698).

The spelling of 11427287 in words is "eleven million, four hundred twenty-seven thousand, two hundred eighty-seven".