1143312444 has 36 divisors (see below), whose sum is σ = 2892760416. Its totient is φ = 380745408.

The previous prime is 1143312437. The next prime is 1143312487. The reversal of 1143312444 is 4442133411.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25312 + ... + 54104.

It is an arithmetic number, because the mean of its divisors is an integer number (80354456).

Almost surely, 2^1143312444 is an apocalyptic number.

It is an amenable number.

1143312444 is an abundant number, since it is smaller than the sum of its proper divisors (1749447972).

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

1143312444 is a wasteful number, since it uses less digits than its factorization.

1143312444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29906 (or 29901 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 1143312444 is about 33812.9035133039. The cubic root of 1143312444 is about 1045.6547392220.

Adding to 1143312444 its reverse (4442133411), we get a palindrome (5585445855).

The spelling of 1143312444 in words is "one billion, one hundred forty-three million, three hundred twelve thousand, four hundred forty-four".