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11143 = 111013
BaseRepresentation
bin10101110000111
3120021201
42232013
5324033
6123331
744326
oct25607
916251
1011143
118410
126547
1350c2
1440bd
15347d
hex2b87

11143 has 4 divisors (see below), whose sum is σ = 12168. Its totient is φ = 10120.

The previous prime is 11131. The next prime is 11149. The reversal of 11143 is 34111.

It is a happy number.

11143 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11143 - 29 = 10631 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11149) 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, 496 + ... + 517.

It is an arithmetic number, because the mean of its divisors is an integer number (3042).

211143 is an apocalyptic number.

11143 is a deficient number, since it is larger than the sum of its proper divisors (1025).

11143 is a wasteful number, since it uses less digits than its factorization.

11143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024.

The product of its digits is 12, while the sum is 10.

The square root of 11143 is about 105.5604092451. The cubic root of 11143 is about 22.3357587525.

Adding to 11143 its reverse (34111), we get a palindrome (45254).

The spelling of 11143 in words is "eleven thousand, one hundred forty-three", and thus it is an iban number.

Divisors: 1 11 1013 11143