1143430223 has 4 divisors (see below), whose sum is σ = 1231386408. Its totient is φ = 1055474040.

The previous prime is 1143430219. The next prime is 1143430229. The reversal of 1143430223 is 3220343411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3220343411 = 1033 ⋅3117467.

It is a cyclic number.

It is not a de Polignac number, because 1143430223 - 2² = 1143430219 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 (1143430229) 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, 43978073 + ... + 43978098.

It is an arithmetic number, because the mean of its divisors is an integer number (307846602).

Almost surely, 2^1143430223 is an apocalyptic number.

1143430223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1143430223 is a deficient number, since it is larger than the sum of its proper divisors (87956185).

1143430223 is an equidigital number, since it uses as much as digits as its factorization.

1143430223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87956184.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1143430223 is about 33814.6450964667. The cubic root of 1143430223 is about 1045.6906442339.

Adding to 1143430223 its reverse (3220343411), we get a palindrome (4363773634).

The spelling of 1143430223 in words is "one billion, one hundred forty-three million, four hundred thirty thousand, two hundred twenty-three".