1131152143 has 4 divisors (see below), whose sum is σ = 1233984168. Its totient is φ = 1028320120.

The previous prime is 1131152131. The next prime is 1131152161. The reversal of 1131152143 is 3412511311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1131152143 - 2⁵ = 1131152111 is a prime.

It is a super-2 number, since 2×1131152143² = 2559010341226984898, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131153143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51415996 + ... + 51416017.

It is an arithmetic number, because the mean of its divisors is an integer number (308496042).

Almost surely, 2^1131152143 is an apocalyptic number.

1131152143 is a deficient number, since it is larger than the sum of its proper divisors (102832025).

1131152143 is a wasteful number, since it uses less digits than its factorization.

1131152143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102832024.

The product of its digits is 360, while the sum is 22.

The square root of 1131152143 is about 33632.6053555177. The cubic root of 1131152143 is about 1041.9343139985.

Adding to 1131152143 its reverse (3412511311), we get a palindrome (4543663454).

The spelling of 1131152143 in words is "one billion, one hundred thirty-one million, one hundred fifty-two thousand, one hundred forty-three".