11140871 has 4 divisors (see below), whose sum is σ = 12732432. Its totient is φ = 9549312.

The previous prime is 11140837. The next prime is 11140903. The reversal of 11140871 is 17804111.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11140871 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 (11140771) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795770 + ... + 795783.

It is an arithmetic number, because the mean of its divisors is an integer number (3183108).

Almost surely, 2^11140871 is an apocalyptic number.

11140871 is a deficient number, since it is larger than the sum of its proper divisors (1591561).

11140871 is an equidigital number, since it uses as much as digits as its factorization.

11140871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1591560.

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 11140871 is about 3337.7943315908. The cubic root of 11140871 is about 223.3433615952.

Adding to 11140871 its reverse (17804111), we get a palindrome (28944982).

The spelling of 11140871 in words is "eleven million, one hundred forty thousand, eight hundred seventy-one".