11813287 has 2 divisors, whose sum is σ = 11813288. Its totient is φ = 11813286.

The previous prime is 11813281. The next prime is 11813293. The reversal of 11813287 is 78231811.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (11813281) and next prime (11813293).

It is a cyclic number.

It is not a de Polignac number, because 11813287 - 2¹⁵ = 11780519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11813281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5906643 + 5906644.

It is an arithmetic number, because the mean of its divisors is an integer number (5906644).

Almost surely, 2^11813287 is an apocalyptic number.

11813287 is a deficient number, since it is larger than the sum of its proper divisors (1).

11813287 is an equidigital number, since it uses as much as digits as its factorization.

11813287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2688, while the sum is 31.

The square root of 11813287 is about 3437.0462609630. The cubic root of 11813287 is about 227.7492305467.

It can be divided in two parts, 11813 and 287, that added together give a square (12100 = 110²).

The spelling of 11813287 in words is "eleven million, eight hundred thirteen thousand, two hundred eighty-seven".