1143233143 has 4 divisors (see below), whose sum is σ = 1231174168. Its totient is φ = 1055292120.

The previous prime is 1143233137. The next prime is 1143233149. The reversal of 1143233143 is 3413323411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3413323411 = 18287 ⋅186653.

It is an interprime number because it is at equal distance from previous prime (1143233137) and next prime (1143233149).

It is a cyclic number.

It is not a de Polignac number, because 1143233143 - 2⁵ = 1143233111 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 (1143233149) 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, 43970493 + ... + 43970518.

It is an arithmetic number, because the mean of its divisors is an integer number (307793542).

Almost surely, 2^1143233143 is an apocalyptic number.

1143233143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1143233143 is a deficient number, since it is larger than the sum of its proper divisors (87941025).

1143233143 is an equidigital number, since it uses as much as digits as its factorization.

1143233143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87941024.

The product of its digits is 2592, while the sum is 25.

The square root of 1143233143 is about 33811.7308489228. The cubic root of 1143233143 is about 1045.6305628667.

Adding to 1143233143 its reverse (3413323411), we get a palindrome (4556556554).

The spelling of 1143233143 in words is "one billion, one hundred forty-three million, two hundred thirty-three thousand, one hundred forty-three".