11801287 has 2 divisors, whose sum is σ = 11801288. Its totient is φ = 11801286.

The previous prime is 11801269. The next prime is 11801303. The reversal of 11801287 is 78210811.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11801287 - 2²³ = 3412679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11801227) 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, 5900643 + 5900644.

It is an arithmetic number, because the mean of its divisors is an integer number (5900644).

Almost surely, 2^11801287 is an apocalyptic number.

11801287 is a deficient number, since it is larger than the sum of its proper divisors (1).

11801287 is an equidigital number, since it uses as much as digits as its factorization.

11801287 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 28.

The square root of 11801287 is about 3435.3001324484. The cubic root of 11801287 is about 227.6720881254.

The spelling of 11801287 in words is "eleven million, eight hundred one thousand, two hundred eighty-seven".