1123223143 has 4 divisors (see below), whose sum is σ = 1283683600. Its totient is φ = 962762688.

The previous prime is 1123223141. The next prime is 1123223149. The reversal of 1123223143 is 3413223211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3413223211 = 19391 ⋅176021.

It is a cyclic number.

It is not a de Polignac number, because 1123223143 - 2¹ = 1123223141 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 (1123223141) 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, 80230218 + ... + 80230231.

It is an arithmetic number, because the mean of its divisors is an integer number (320920900).

Almost surely, 2^1123223143 is an apocalyptic number.

1123223143 is a deficient number, since it is larger than the sum of its proper divisors (160460457).

1123223143 is an equidigital number, since it uses as much as digits as its factorization.

1123223143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160460456.

The product of its digits is 864, while the sum is 22.

The square root of 1123223143 is about 33514.5213750696. The cubic root of 1123223143 is about 1039.4940657374.

Adding to 1123223143 its reverse (3413223211), we get a palindrome (4536446354).

The spelling of 1123223143 in words is "one billion, one hundred twenty-three million, two hundred twenty-three thousand, one hundred forty-three".