2531042443 has 4 divisors (see below), whose sum is σ = 2533479520. Its totient is φ = 2528605368.

The previous prime is 2531042441. The next prime is 2531042447. The reversal of 2531042443 is 3442401352.

It is a happy number.

2531042443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2531042443 - 2¹ = 2531042441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2531042441) 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, 1216980 + ... + 1219057.

It is an arithmetic number, because the mean of its divisors is an integer number (633369880).

Almost surely, 2^2531042443 is an apocalyptic number.

2531042443 is a deficient number, since it is larger than the sum of its proper divisors (2437077).

2531042443 is a wasteful number, since it uses less digits than its factorization.

2531042443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2437076.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 2531042443 is about 50309.4667334091. The cubic root of 2531042443 is about 1362.8031936208.

Adding to 2531042443 its reverse (3442401352), we get a palindrome (5973443795).

The spelling of 2531042443 in words is "two billion, five hundred thirty-one million, forty-two thousand, four hundred forty-three".