2143440003 has 4 divisors (see below), whose sum is σ = 2857920008. Its totient is φ = 1428960000.

The previous prime is 2143440001. The next prime is 2143440011. The reversal of 2143440003 is 3000443412.

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

It is not a de Polignac number, because 2143440003 - 2¹ = 2143440001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143440001) 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, 357239998 + ... + 357240003.

It is an arithmetic number, because the mean of its divisors is an integer number (714480002).

Almost surely, 2^2143440003 is an apocalyptic number.

2143440003 is a deficient number, since it is larger than the sum of its proper divisors (714480005).

2143440003 is an equidigital number, since it uses as much as digits as its factorization.

2143440003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714480004.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2143440003 is about 46297.3001696643. The cubic root of 2143440003 is about 1289.3488697614.

Adding to 2143440003 its reverse (3000443412), we get a palindrome (5143883415).

The spelling of 2143440003 in words is "two billion, one hundred forty-three million, four hundred forty thousand, three".