1131143113 has 4 divisors (see below), whose sum is σ = 1131214468. Its totient is φ = 1131071760.

The previous prime is 1131143099. The next prime is 1131143149. The reversal of 1131143113 is 3113411311.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3113411311 = 23011 ⋅135301.

It can be written as a sum of positive squares in 2 ways, for example, as 544195584 + 586947529 = 23328^2 + 24227^2 .

It is a cyclic number.

It is not a de Polignac number, because 1131143113 - 2²¹ = 1129045961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1131143183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18 + ... + 47563.

It is an arithmetic number, because the mean of its divisors is an integer number (282803617).

Almost surely, 2^1131143113 is an apocalyptic number.

It is an amenable number.

1131143113 is a deficient number, since it is larger than the sum of its proper divisors (71355).

1131143113 is an equidigital number, since it uses as much as digits as its factorization.

1131143113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71354.

The product of its digits is 108, while the sum is 19.

The square root of 1131143113 is about 33632.4711105206. The cubic root of 1131143113 is about 1041.9315414001.

Adding to 1131143113 its reverse (3113411311), we get a palindrome (4244554424).

The spelling of 1131143113 in words is "one billion, one hundred thirty-one million, one hundred forty-three thousand, one hundred thirteen".