216905103 has 6 divisors (see below), whose sum is σ = 313307384. Its totient is φ = 144603396.

The previous prime is 216905089. The next prime is 216905131. The reversal of 216905103 is 301509612.

It is not a de Polignac number, because 216905103 - 2⁸ = 216904847 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 (216905303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12050275 + ... + 12050292.

Almost surely, 2^216905103 is an apocalyptic number.

216905103 is a deficient number, since it is larger than the sum of its proper divisors (96402281).

216905103 is a wasteful number, since it uses less digits than its factorization.

216905103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24100573 (or 24100570 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 216905103 is about 14727.6984963707. The cubic root of 216905103 is about 600.8368904811.

The spelling of 216905103 in words is "two hundred sixteen million, nine hundred five thousand, one hundred three".