11197287 has 6 divisors (see below), whose sum is σ = 16173872. Its totient is φ = 7464852.

The previous prime is 11197279. The next prime is 11197301. The reversal of 11197287 is 78279111.

It is not a de Polignac number, because 11197287 - 2³ = 11197279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11197217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 622063 + ... + 622080.

Almost surely, 2^11197287 is an apocalyptic number.

11197287 is a deficient number, since it is larger than the sum of its proper divisors (4976585).

11197287 is a wasteful number, since it uses less digits than its factorization.

11197287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1244149 (or 1244146 counting only the distinct ones).

The product of its digits is 7056, while the sum is 36.

The square root of 11197287 is about 3346.2347496851. The cubic root of 11197287 is about 223.7197214628.

The spelling of 11197287 in words is "eleven million, one hundred ninety-seven thousand, two hundred eighty-seven".