11491143 has 8 divisors (see below), whose sum is σ = 16128000. Its totient is φ = 7257528.

The previous prime is 11491097. The next prime is 11491153. The reversal of 11491143 is 34119411.

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

It is not a de Polignac number, because 11491143 - 2⁸ = 11490887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11491153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100743 + ... + 100856.

It is an arithmetic number, because the mean of its divisors is an integer number (2016000).

Almost surely, 2^11491143 is an apocalyptic number.

11491143 is a deficient number, since it is larger than the sum of its proper divisors (4636857).

11491143 is a wasteful number, since it uses less digits than its factorization.

11491143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201621.

The product of its digits is 432, while the sum is 24.

The square root of 11491143 is about 3389.8588466188. The cubic root of 11491143 is about 225.6599095520.

The spelling of 11491143 in words is "eleven million, four hundred ninety-one thousand, one hundred forty-three".