1143111241 has 4 divisors (see below), whose sum is σ = 1182528900. Its totient is φ = 1103693584.

The previous prime is 1143111217. The next prime is 1143111251. The reversal of 1143111241 is 1421113411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1421113411 = 73 ⋅19467307.

It can be written as a sum of positive squares in 2 ways, for example, as 968765625 + 174345616 = 31125^2 + 13204^2 .

It is a cyclic number.

It is not a de Polignac number, because 1143111241 - 2⁵ = 1143111209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143111251) 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, 19708786 + ... + 19708843.

It is an arithmetic number, because the mean of its divisors is an integer number (295632225).

Almost surely, 2^1143111241 is an apocalyptic number.

It is an amenable number.

1143111241 is a deficient number, since it is larger than the sum of its proper divisors (39417659).

1143111241 is an equidigital number, since it uses as much as digits as its factorization.

1143111241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39417658.

The product of its digits is 96, while the sum is 19.

The square root of 1143111241 is about 33809.9281424850. The cubic root of 1143111241 is about 1045.5933966396.

Adding to 1143111241 its reverse (1421113411), we get a palindrome (2564224652).

The spelling of 1143111241 in words is "one billion, one hundred forty-three million, one hundred eleven thousand, two hundred forty-one".