1143311344 has 20 divisors (see below), whose sum is σ = 2531618224. Its totient is φ = 489990528.

The previous prime is 1143311333. The next prime is 1143311357. The reversal of 1143311344 is 4431133411.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5103957 + ... + 5104180.

Almost surely, 2^1143311344 is an apocalyptic number.

1143311344 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1143311344 is an abundant number, since it is smaller than the sum of its proper divisors (1388306880).

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

1143311344 is a wasteful number, since it uses less digits than its factorization.

1143311344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10208152 (or 10208146 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

The square root of 1143311344 is about 33812.8872473204. The cubic root of 1143311344 is about 1045.6544038746.

Adding to 1143311344 its reverse (4431133411), we get a palindrome (5574444755).

The spelling of 1143311344 in words is "one billion, one hundred forty-three million, three hundred eleven thousand, three hundred forty-four".