2163442321 has 16 divisors (see below), whose sum is σ = 2317707648. Its totient is φ = 2012256000.

The previous prime is 2163442319. The next prime is 2163442339. The reversal of 2163442321 is 1232443612.

It is a happy number.

It is not a de Polignac number, because 2163442321 - 2¹ = 2163442319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2163442321.

It is not an unprimeable number, because it can be changed into a prime (2163442361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1412326 + ... + 1413856.

It is an arithmetic number, because the mean of its divisors is an integer number (144856728).

Almost surely, 2^2163442321 is an apocalyptic number.

It is an amenable number.

2163442321 is a deficient number, since it is larger than the sum of its proper divisors (154265327).

2163442321 is a wasteful number, since it uses less digits than its factorization.

2163442321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472.

The product of its digits is 6912, while the sum is 28.

The square root of 2163442321 is about 46512.8188889902. The cubic root of 2163442321 is about 1293.3471399062.

Adding to 2163442321 its reverse (1232443612), we get a palindrome (3395885933).

The spelling of 2163442321 in words is "two billion, one hundred sixty-three million, four hundred forty-two thousand, three hundred twenty-one".