1143442303 has 4 divisors (see below), whose sum is σ = 1145473848. Its totient is φ = 1141410760.

The previous prime is 1143442177. The next prime is 1143442327. The reversal of 1143442303 is 3032443411.

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 1143442303 - 2⁹ = 1143441791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143442343) 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 3 ways as a sum of consecutive naturals, for example, 1014928 + ... + 1016053.

It is an arithmetic number, because the mean of its divisors is an integer number (286368462).

Almost surely, 2^1143442303 is an apocalyptic number.

1143442303 is a deficient number, since it is larger than the sum of its proper divisors (2031545).

1143442303 is an equidigital number, since it uses as much as digits as its factorization.

1143442303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2031544.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 1143442303 is about 33814.8237168257. The cubic root of 1143442303 is about 1045.6943266911.

Adding to 1143442303 its reverse (3032443411), we get a palindrome (4175885714).

The spelling of 1143442303 in words is "one billion, one hundred forty-three million, four hundred forty-two thousand, three hundred three".