212311044 has 84 divisors (see below), whose sum is σ = 607795440. Its totient is φ = 64326960.

The previous prime is 212311039. The next prime is 212311051. The reversal of 212311044 is 440113212.

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

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 28767 + ... + 35385.

It is an arithmetic number, because the mean of its divisors is an integer number (7235660).

Almost surely, 2^212311044 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 212311044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303897720).

212311044 is an abundant number, since it is smaller than the sum of its proper divisors (395484396).

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

212311044 is a wasteful number, since it uses less digits than its factorization.

212311044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6652 (or 6635 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 212311044 is about 14570.8971583770. The cubic root of 212311044 is about 596.5646683666.

Adding to 212311044 its reverse (440113212), we get a palindrome (652424256).

The spelling of 212311044 in words is "two hundred twelve million, three hundred eleven thousand, forty-four".