212231232 has 56 divisors (see below), whose sum is σ = 623925600. Its totient is φ = 70743168.

The previous prime is 212231231. The next prime is 212231237. The reversal of 212231232 is 232132212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (212231231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59682 + ... + 63137.

Almost surely, 2^212231232 is an apocalyptic number.

It is an amenable number.

212231232 is an abundant number, since it is smaller than the sum of its proper divisors (411694368).

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

212231232 is a wasteful number, since it uses less digits than its factorization.

212231232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122840 (or 122824 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 212231232 is about 14568.1581540015. The cubic root of 212231232 is about 596.4899054372.

Adding to 212231232 its reverse (232132212), we get a palindrome (444363444).

The spelling of 212231232 in words is "two hundred twelve million, two hundred thirty-one thousand, two hundred thirty-two".