212231223 has 24 divisors (see below), whose sum is σ = 315642288. Its totient is φ = 137313792.

The previous prime is 212231219. The next prime is 212231231. The reversal of 212231223 is 322132212.

212231223 is a `hidden beast` number, since 212 + 231 + 223 = 666.

212231223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212231223 - 2² = 212231219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212231196 and 212231205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212231023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 223636 + ... + 224582.

It is an arithmetic number, because the mean of its divisors is an integer number (13151762).

Almost surely, 2^212231223 is an apocalyptic number.

212231223 is a deficient number, since it is larger than the sum of its proper divisors (103411065).

212231223 is a wasteful number, since it uses less digits than its factorization.

212231223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1663 (or 1660 counting only the distinct ones).

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

The square root of 212231223 is about 14568.1578451086. The cubic root of 212231223 is about 596.4898970055.

Adding to 212231223 its reverse (322132212), we get a palindrome (534363435).

The spelling of 212231223 in words is "two hundred twelve million, two hundred thirty-one thousand, two hundred twenty-three".