2163303 has 12 divisors (see below), whose sum is σ = 3146728. Its totient is φ = 1432080.

The previous prime is 2163289. The next prime is 2163307. The reversal of 2163303 is 3033612.

It is a happy number.

It is not a de Polignac number, because 2163303 - 2¹² = 2159207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 648 + ... + 2178.

2^2163303 is an apocalyptic number.

2163303 is a deficient number, since it is larger than the sum of its proper divisors (983425).

2163303 is a wasteful number, since it uses less digits than its factorization.

2163303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1694 (or 1691 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 2163303 is about 1470.8171198351. The cubic root of 2163303 is about 129.3319376392.

Adding to 2163303 its reverse (3033612), we get a palindrome (5196915).

The spelling of 2163303 in words is "two million, one hundred sixty-three thousand, three hundred three".