2543143243 has 8 divisors (see below), whose sum is σ = 2558967840. Its totient is φ = 2527365120.

The previous prime is 2543143231. The next prime is 2543143279. The reversal of 2543143243 is 3423413452.

It is a happy number.

2543143243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2543143243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2543143223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101553 + ... + 124093.

It is an arithmetic number, because the mean of its divisors is an integer number (319870980).

Almost surely, 2^2543143243 is an apocalyptic number.

2543143243 is a deficient number, since it is larger than the sum of its proper divisors (15824597).

2543143243 is a wasteful number, since it uses less digits than its factorization.

2543143243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23237.

The product of its digits is 34560, while the sum is 31.

The square root of 2543143243 is about 50429.5869802639. The cubic root of 2543143243 is about 1364.9715752153.

Adding to 2543143243 its reverse (3423413452), we get a palindrome (5966556695).

The spelling of 2543143243 in words is "two billion, five hundred forty-three million, one hundred forty-three thousand, two hundred forty-three".