1143318 has 32 divisors (see below), whose sum is σ = 2643840. Its totient is φ = 325760.

The previous prime is 1143299. The next prime is 1143341. The reversal of 1143318 is 8133411.

It is a junction number, because it is equal to n+sod(n) for n = 1143294 and 1143303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613 + ... + 1631.

It is an arithmetic number, because the mean of its divisors is an integer number (82620).

2^1143318 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1143318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1321920).

1143318 is an abundant number, since it is smaller than the sum of its proper divisors (1500522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143318 is a wasteful number, since it uses less digits than its factorization.

1143318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052.

The product of its digits is 288, while the sum is 21.

The square root of 1143318 is about 1069.2604921159. The cubic root of 1143318 is about 104.5656433028.

Adding to 1143318 its reverse (8133411), we get a palindrome (9276729).

The spelling of 1143318 in words is "one million, one hundred forty-three thousand, three hundred eighteen".