1143111432 has 16 divisors (see below), whose sum is σ = 2857778640. Its totient is φ = 381037136.

The previous prime is 1143111419. The next prime is 1143111439. The reversal of 1143111432 is 2341113411.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1143111399 and 1143111408.

It is not an unprimeable number, because it can be changed into a prime (1143111439) 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, 23814798 + ... + 23814845.

It is an arithmetic number, because the mean of its divisors is an integer number (178611165).

Almost surely, 2^1143111432 is an apocalyptic number.

1143111432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1143111432 is an abundant number, since it is smaller than the sum of its proper divisors (1714667208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1143111432 is a wasteful number, since it uses less digits than its factorization.

1143111432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47629652 (or 47629648 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

The square root of 1143111432 is about 33809.9309670990. The cubic root of 1143111432 is about 1045.5934548750.

Adding to 1143111432 its reverse (2341113411), we get a palindrome (3484224843).

It can be divided in two parts, 1143 and 111432, that added together give a triangular number (112575 = T₄₇₄).

The spelling of 1143111432 in words is "one billion, one hundred forty-three million, one hundred eleven thousand, four hundred thirty-two".