11317287 has 8 divisors (see below), whose sum is σ = 15108480. Its totient is φ = 7535480.

The previous prime is 11317277. The next prime is 11317297. The reversal of 11317287 is 78271311.

It is an interprime number because it is at equal distance from previous prime (11317277) and next prime (11317297).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11317287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11317237) 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 in 7 ways as a sum of consecutive naturals, for example, 1264 + ... + 4922.

It is an arithmetic number, because the mean of its divisors is an integer number (1888560).

Almost surely, 2^11317287 is an apocalyptic number.

11317287 is a deficient number, since it is larger than the sum of its proper divisors (3791193).

11317287 is a wasteful number, since it uses less digits than its factorization.

11317287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4693.

The product of its digits is 2352, while the sum is 30.

The square root of 11317287 is about 3364.1175663166. The cubic root of 11317287 is about 224.5160759847.

Adding to 11317287 its reverse (78271311), we get a palindrome (89588598).

The spelling of 11317287 in words is "eleven million, three hundred seventeen thousand, two hundred eighty-seven".