1131143044 has 24 divisors (see below), whose sum is σ = 2043125280. Its totient is φ = 547679616.

The previous prime is 1131143033. The next prime is 1131143051. The reversal of 1131143044 is 4403411311.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19957 + ... + 51580.

It is an arithmetic number, because the mean of its divisors is an integer number (85130220).

Almost surely, 2^1131143044 is an apocalyptic number.

It is an amenable number.

1131143044 is a deficient number, since it is larger than the sum of its proper divisors (911982236).

1131143044 is a wasteful number, since it uses less digits than its factorization.

1131143044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71667 (or 71665 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1131143044 is about 33632.4700847262. The cubic root of 1131143044 is about 1041.9315202140.

Adding to 1131143044 its reverse (4403411311), we get a palindrome (5534554355).

The spelling of 1131143044 in words is "one billion, one hundred thirty-one million, one hundred forty-three thousand, forty-four".