2143220313 has 24 divisors (see below), whose sum is σ = 3097460928. Its totient is φ = 1317580992.

The previous prime is 2143220297. The next prime is 2143220323. The reversal of 2143220313 is 3130223412.

It is not a de Polignac number, because 2143220313 - 2⁴ = 2143220297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2143220313.

It is not an unprimeable number, because it can be changed into a prime (2143220323) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 808356 + ... + 811002.

It is an arithmetic number, because the mean of its divisors is an integer number (129060872).

Almost surely, 2^2143220313 is an apocalyptic number.

It is an amenable number.

2143220313 is a deficient number, since it is larger than the sum of its proper divisors (954240615).

2143220313 is a wasteful number, since it uses less digits than its factorization.

2143220313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4273 (or 4260 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 2143220313 is about 46294.9275083135. The cubic root of 2143220313 is about 1289.3048180298.

Adding to 2143220313 its reverse (3130223412), we get a palindrome (5273443725).

The spelling of 2143220313 in words is "two billion, one hundred forty-three million, two hundred twenty thousand, three hundred thirteen".