2143045313 has 4 divisors (see below), whose sum is σ = 2269106820. Its totient is φ = 2016983808.

The previous prime is 2143045297. The next prime is 2143045337. The reversal of 2143045313 is 3135403412.

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 1950723889 + 192321424 = 44167^2 + 13868^2 .

It is a cyclic number.

It is not a de Polignac number, because 2143045313 - 2⁴ = 2143045297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143045213) 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, 63030728 + ... + 63030761.

It is an arithmetic number, because the mean of its divisors is an integer number (567276705).

Almost surely, 2^2143045313 is an apocalyptic number.

It is an amenable number.

2143045313 is a deficient number, since it is larger than the sum of its proper divisors (126061507).

2143045313 is a wasteful number, since it uses less digits than its factorization.

2143045313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126061506.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 2143045313 is about 46293.0374138487. The cubic root of 2143045313 is about 1289.2697252797.

Adding to 2143045313 its reverse (3135403412), we get a palindrome (5278448725).

The spelling of 2143045313 in words is "two billion, one hundred forty-three million, forty-five thousand, three hundred thirteen".