1143111 has 4 divisors (see below), whose sum is σ = 1524152. Its totient is φ = 762072.

The previous prime is 1143101. The next prime is 1143113. The reversal of 1143111 is 1113411.

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

It is not a de Polignac number, because 1143111 - 2⁶ = 1143047 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143113) 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, 190516 + ... + 190521.

It is an arithmetic number, because the mean of its divisors is an integer number (381038).

2^1143111 is an apocalyptic number.

1143111 is a deficient number, since it is larger than the sum of its proper divisors (381041).

1143111 is an equidigital number, since it uses as much as digits as its factorization.

1143111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381040.

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

The square root of 1143111 is about 1069.1636918639. The cubic root of 1143111 is about 104.5593323159.

Adding to 1143111 its reverse (1113411), we get a palindrome (2256522).

The spelling of 1143111 in words is "one million, one hundred forty-three thousand, one hundred eleven".