2540311143 has 4 divisors (see below), whose sum is σ = 3387081528. Its totient is φ = 1693540760.

The previous prime is 2540311141. The next prime is 2540311157. The reversal of 2540311143 is 3411130452.

It is a happy number.

2540311143 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 2540311143 - 2¹ = 2540311141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540311141) 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, 423385188 + ... + 423385193.

It is an arithmetic number, because the mean of its divisors is an integer number (846770382).

Almost surely, 2^2540311143 is an apocalyptic number.

2540311143 is a deficient number, since it is larger than the sum of its proper divisors (846770385).

2540311143 is an equidigital number, since it uses as much as digits as its factorization.

2540311143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846770384.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 2540311143 is about 50401.4994122199. The cubic root of 2540311143 is about 1364.4646996016.

Adding to 2540311143 its reverse (3411130452), we get a palindrome (5951441595).

The spelling of 2540311143 in words is "two billion, five hundred forty million, three hundred eleven thousand, one hundred forty-three".