2540443213 has 16 divisors (see below), whose sum is σ = 3175612416. Its totient is φ = 1974374640.

The previous prime is 2540443207. The next prime is 2540443231. The reversal of 2540443213 is 3123440452.

It is a happy number.

2540443213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2540443213 - 2¹³ = 2540435021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540443313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13581 + ... + 72562.

It is an arithmetic number, because the mean of its divisors is an integer number (198475776).

Almost surely, 2^2540443213 is an apocalyptic number.

It is an amenable number.

2540443213 is a deficient number, since it is larger than the sum of its proper divisors (635169203).

2540443213 is a wasteful number, since it uses less digits than its factorization.

2540443213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86544.

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

The square root of 2540443213 is about 50402.8095744672. The cubic root of 2540443213 is about 1364.4883452260.

Adding to 2540443213 its reverse (3123440452), we get a palindrome (5663883665).

The spelling of 2540443213 in words is "two billion, five hundred forty million, four hundred forty-three thousand, two hundred thirteen".