2142543313 has 4 divisors (see below), whose sum is σ = 2142914980. Its totient is φ = 2142171648.

The previous prime is 2142543301. The next prime is 2142543317. The reversal of 2142543313 is 3133452412.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1404225729 + 738317584 = 37473^2 + 27172^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2142543313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2142543317) 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, 177048 + ... + 188761.

It is an arithmetic number, because the mean of its divisors is an integer number (535728745).

Almost surely, 2^2142543313 is an apocalyptic number.

It is an amenable number.

2142543313 is a deficient number, since it is larger than the sum of its proper divisors (371667).

2142543313 is an equidigital number, since it uses as much as digits as its factorization.

2142543313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371666.

The product of its digits is 8640, while the sum is 28.

The square root of 2142543313 is about 46287.6151146287. The cubic root of 2142543313 is about 1289.1690486179.

Adding to 2142543313 its reverse (3133452412), we get a palindrome (5275995725).

Subtracting 2142543313 from its reverse (3133452412), we obtain a palindrome (990909099).

The spelling of 2142543313 in words is "two billion, one hundred forty-two million, five hundred forty-three thousand, three hundred thirteen".