216703263 has 24 divisors (see below), whose sum is σ = 345213568. Its totient is φ = 118440432.

The previous prime is 216703261. The next prime is 216703297. The reversal of 216703263 is 362307612.

It is not a de Polignac number, because 216703263 - 2¹ = 216703261 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 216703263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216703261) 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, 1356 + ... + 20862.

Almost surely, 2^216703263 is an apocalyptic number.

216703263 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

216703263 is a deficient number, since it is larger than the sum of its proper divisors (128510305).

216703263 is a wasteful number, since it uses less digits than its factorization.

216703263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19563 (or 19540 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 216703263 is about 14720.8445070247. The cubic root of 216703263 is about 600.6504640172.

The spelling of 216703263 in words is "two hundred sixteen million, seven hundred three thousand, two hundred sixty-three".