1131143055 has 64 divisors (see below), whose sum is σ = 2230502400. Its totient is φ = 477895680.

The previous prime is 1131143051. The next prime is 1131143063. The reversal of 1131143055 is 5503411311.

It is not a de Polignac number, because 1131143055 - 2² = 1131143051 is a prime.

It is a super-2 number, since 2×1131143055² = 2558969221749466050, which contains 22 as substring.

It is a congruent number.

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

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 74881 + ... + 88709.

It is an arithmetic number, because the mean of its divisors is an integer number (34851600).

Almost surely, 2^1131143055 is an apocalyptic number.

1131143055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1131143055 is a deficient number, since it is larger than the sum of its proper divisors (1099359345).

1131143055 is a wasteful number, since it uses less digits than its factorization.

1131143055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13904.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1131143055 is about 33632.4702482586. The cubic root of 1131143055 is about 1041.9315235915.

Adding to 1131143055 its reverse (5503411311), we get a palindrome (6634554366).

The spelling of 1131143055 in words is "one billion, one hundred thirty-one million, one hundred forty-three thousand, fifty-five".