216156303 has 16 divisors (see below), whose sum is σ = 349344000. Its totient is φ = 131003640.

The previous prime is 216156301. The next prime is 216156307. The reversal of 216156303 is 303651612.

216156303 is a `hidden beast` number, since 2 + 16 + 15 + 630 + 3 = 666.

It is not a de Polignac number, because 216156303 - 2¹ = 216156301 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216156301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 363603 + ... + 364196.

It is an arithmetic number, because the mean of its divisors is an integer number (21834000).

Almost surely, 2^216156303 is an apocalyptic number.

216156303 is a deficient number, since it is larger than the sum of its proper divisors (133187697).

216156303 is a wasteful number, since it uses less digits than its factorization.

216156303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727819 (or 727813 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 216156303 is about 14702.2550311168. The cubic root of 216156303 is about 600.1446901052.

The spelling of 216156303 in words is "two hundred sixteen million, one hundred fifty-six thousand, three hundred three".