1103321143 has 4 divisors (see below), whose sum is σ = 1111374720. Its totient is φ = 1095267568.

The previous prime is 1103321123. The next prime is 1103321159. The reversal of 1103321143 is 3411233011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3411233011 = 53 ⋅64362887.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1103321143 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 1103321143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1103321123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4026583 + ... + 4026856.

It is an arithmetic number, because the mean of its divisors is an integer number (277843680).

Almost surely, 2^1103321143 is an apocalyptic number.

1103321143 is a deficient number, since it is larger than the sum of its proper divisors (8053577).

1103321143 is an equidigital number, since it uses as much as digits as its factorization.

1103321143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8053576.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1103321143 is about 33216.2782833959. The cubic root of 1103321143 is about 1033.3179655594.

Adding to 1103321143 its reverse (3411233011), we get a palindrome (4514554154).

The spelling of 1103321143 in words is "one billion, one hundred three million, three hundred twenty-one thousand, one hundred forty-three".