216312162 has 16 divisors (see below), whose sum is σ = 471953952. Its totient is φ = 65549120.

The previous prime is 216312149. The next prime is 216312197. The reversal of 216312162 is 261213612.

It is a super-2 number, since 2×216312162² = 93581902858228488, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1638663 + ... + 1638794.

It is an arithmetic number, because the mean of its divisors is an integer number (29497122).

Almost surely, 2^216312162 is an apocalyptic number.

216312162 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

216312162 is an abundant number, since it is smaller than the sum of its proper divisors (255641790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216312162 is a wasteful number, since it uses less digits than its factorization.

216312162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3277473.

The product of its digits is 864, while the sum is 24.

The square root of 216312162 is about 14707.5545893938. The cubic root of 216312162 is about 600.2888997614.

Adding to 216312162 its reverse (261213612), we get a palindrome (477525774).

The spelling of 216312162 in words is "two hundred sixteen million, three hundred twelve thousand, one hundred sixty-two".