212231324 has 12 divisors (see below), whose sum is σ = 371533344. Its totient is φ = 106078944.

The previous prime is 212231321. The next prime is 212231339. The reversal of 212231324 is 423132212.

It is a junction number, because it is equal to n+sod(n) for n = 212231296 and 212231305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212231321) 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 3 ways as a sum of consecutive naturals, for example, 6989 + ... + 21755.

It is an arithmetic number, because the mean of its divisors is an integer number (30961112).

Almost surely, 2^212231324 is an apocalyptic number.

It is an amenable number.

212231324 is a deficient number, since it is larger than the sum of its proper divisors (159302020).

212231324 is a wasteful number, since it uses less digits than its factorization.

212231324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18364 (or 18362 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 212231324 is about 14568.1613115726. The cubic root of 212231324 is about 596.4899916278.

Adding to 212231324 its reverse (423132212), we get a palindrome (635363536).

The spelling of 212231324 in words is "two hundred twelve million, two hundred thirty-one thousand, three hundred twenty-four".