216161303 has 4 divisors (see below), whose sum is σ = 217612200. Its totient is φ = 214710408.

The previous prime is 216161237. The next prime is 216161321. The reversal of 216161303 is 303161612.

It is a happy number.

216161303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216161303 - 2¹⁶ = 216095767 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 (216161353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 725225 + ... + 725522.

It is an arithmetic number, because the mean of its divisors is an integer number (54403050).

Almost surely, 2^216161303 is an apocalyptic number.

216161303 is a deficient number, since it is larger than the sum of its proper divisors (1450897).

216161303 is a wasteful number, since it uses less digits than its factorization.

216161303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450896.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 216161303 is about 14702.4250720757. The cubic root of 216161303 is about 600.1493174670.

The spelling of 216161303 in words is "two hundred sixteen million, one hundred sixty-one thousand, three hundred three".