2543111243 has 8 divisors (see below), whose sum is σ = 2743512768. Its totient is φ = 2348354944.

The previous prime is 2543111231. The next prime is 2543111251. The reversal of 2543111243 is 3421113452.

It is a happy number.

2543111243 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 not a de Polignac number, because 2543111243 - 2⁴ = 2543111227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2543111213) 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, 1410371 + ... + 1412172.

It is an arithmetic number, because the mean of its divisors is an integer number (342939096).

Almost surely, 2^2543111243 is an apocalyptic number.

2543111243 is a deficient number, since it is larger than the sum of its proper divisors (200401525).

2543111243 is a wasteful number, since it uses less digits than its factorization.

2543111243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2822613.

The product of its digits is 2880, while the sum is 26.

The square root of 2543111243 is about 50429.2697052020. The cubic root of 2543111243 is about 1364.9658501119.

Adding to 2543111243 its reverse (3421113452), we get a palindrome (5964224695).

The spelling of 2543111243 in words is "two billion, five hundred forty-three million, one hundred eleven thousand, two hundred forty-three".