1131143056 has 20 divisors (see below), whose sum is σ = 2193109632. Its totient is φ = 565179296.

The previous prime is 1131143051. The next prime is 1131143063. The reversal of 1131143056 is 6503411311.

It is a super-2 number, since 2×1131143056² = 2558969226274038272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1131143056.

It is not an unprimeable number, because it can be changed into a prime (1131143051) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 21 + ... + 47563.

Almost surely, 2^1131143056 is an apocalyptic number.

1131143056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1131143056 is a deficient number, since it is larger than the sum of its proper divisors (1061966576).

1131143056 is a wasteful number, since it uses less digits than its factorization.

1131143056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49038 (or 49032 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 1131143056 is about 33632.4702631252. The cubic root of 1131143056 is about 1041.9315238986.

Adding to 1131143056 its reverse (6503411311), we get a palindrome (7634554367).

The spelling of 1131143056 in words is "one billion, one hundred thirty-one million, one hundred forty-three thousand, fifty-six".