1131445143 has 12 divisors (see below), whose sum is σ = 1674171408. Its totient is φ = 735899040.

The previous prime is 1131445109. The next prime is 1131445153. The reversal of 1131445143 is 3415441311.

1131445143 is a `hidden beast` number, since 1 + 1 + 3 + 144 + 514 + 3 = 666.

It is not a de Polignac number, because 1131445143 - 2¹⁶ = 1131379607 is a prime.

It is a super-2 number, since 2×1131445143² = 2560336223236580898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131445153) 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 11 ways as a sum of consecutive naturals, for example, 1532755 + ... + 1533492.

It is an arithmetic number, because the mean of its divisors is an integer number (139514284).

Almost surely, 2^1131445143 is an apocalyptic number.

1131445143 is a deficient number, since it is larger than the sum of its proper divisors (542726265).

1131445143 is a wasteful number, since it uses less digits than its factorization.

1131445143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3066294 (or 3066291 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 1131445143 is about 33636.9609655807. The cubic root of 1131445143 is about 1042.0242695953.

Adding to 1131445143 its reverse (3415441311), we get a palindrome (4546886454).

The spelling of 1131445143 in words is "one billion, one hundred thirty-one million, four hundred forty-five thousand, one hundred forty-three".