1143302111 has 4 divisors (see below), whose sum is σ = 1306630992. Its totient is φ = 979973232.

The previous prime is 1143302089. The next prime is 1143302191. The reversal of 1143302111 is 1112033411.

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

It is not a de Polignac number, because 1143302111 - 2⁶ = 1143302047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1143302111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143302191) 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, 81664430 + ... + 81664443.

It is an arithmetic number, because the mean of its divisors is an integer number (326657748).

Almost surely, 2^1143302111 is an apocalyptic number.

1143302111 is a deficient number, since it is larger than the sum of its proper divisors (163328881).

1143302111 is an equidigital number, since it uses as much as digits as its factorization.

1143302111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163328880.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1143302111 is about 33812.7507162609. The cubic root of 1143302111 is about 1045.6515890819.

Adding to 1143302111 its reverse (1112033411), we get a palindrome (2255335522).

The spelling of 1143302111 in words is "one billion, one hundred forty-three million, three hundred two thousand, one hundred eleven".