1143432143 has 16 divisors (see below), whose sum is σ = 1365611520. Its totient is φ = 936086976.

The previous prime is 1143432137. The next prime is 1143432161. The reversal of 1143432143 is 3412343411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1143432143 - 2¹² = 1143428047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1143432343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112163 + ... + 121931.

It is an arithmetic number, because the mean of its divisors is an integer number (85350720).

Almost surely, 2^1143432143 is an apocalyptic number.

1143432143 is a deficient number, since it is larger than the sum of its proper divisors (222179377).

1143432143 is an equidigital number, since it uses as much as digits as its factorization.

1143432143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10526.

The product of its digits is 3456, while the sum is 26.

The square root of 1143432143 is about 33814.6734865206. The cubic root of 1143432143 is about 1045.6912295269.

Adding to 1143432143 its reverse (3412343411), we get a palindrome (4555775554).

The spelling of 1143432143 in words is "one billion, one hundred forty-three million, four hundred thirty-two thousand, one hundred forty-three".