2143053205 has 4 divisors (see below), whose sum is σ = 2571663852. Its totient is φ = 1714442560.

The previous prime is 2143053197. The next prime is 2143053239. The reversal of 2143053205 is 5023503412.

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 1669294449 + 473758756 = 40857^2 + 21766^2 .

It is not a de Polignac number, because 2143053205 - 2³ = 2143053197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2143053205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214305316 + ... + 214305325.

It is an arithmetic number, because the mean of its divisors is an integer number (642915963).

Almost surely, 2^2143053205 is an apocalyptic number.

It is an amenable number.

2143053205 is a deficient number, since it is larger than the sum of its proper divisors (428610647).

2143053205 is an equidigital number, since it uses as much as digits as its factorization.

2143053205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428610646.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 2143053205 is about 46293.1226533704. The cubic root of 2143053205 is about 1289.2713079036.

Adding to 2143053205 its reverse (5023503412), we get a palindrome (7166556617).

The spelling of 2143053205 in words is "two billion, one hundred forty-three million, fifty-three thousand, two hundred five".