212323132 has 48 divisors (see below), whose sum is σ = 452487168. Its totient is φ = 85098240.

The previous prime is 212323129. The next prime is 212323147. The reversal of 212323132 is 231323212.

It is a super-2 number, since 2×212323132² = 90162224764578848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78157 + ... + 80827.

It is an arithmetic number, because the mean of its divisors is an integer number (9426816).

Almost surely, 2^212323132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212323132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226243584).

212323132 is an abundant number, since it is smaller than the sum of its proper divisors (240164036).

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

212323132 is a wasteful number, since it uses less digits than its factorization.

212323132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866 (or 2864 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 212323132 is about 14571.3119519143. The cubic root of 212323132 is about 596.5759900211.

Adding to 212323132 its reverse (231323212), we get a palindrome (443646344).

The spelling of 212323132 in words is "two hundred twelve million, three hundred twenty-three thousand, one hundred thirty-two".