212043312 has 160 divisors (see below), whose sum is σ = 694330560. Its totient is φ = 61378560.

The previous prime is 212043311. The next prime is 212043313. The reversal of 212043312 is 213340212.

It is an interprime number because it is at equal distance from previous prime (212043311) and next prime (212043313).

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

It is not an unprimeable number, because it can be changed into a prime (212043311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94362 + ... + 96582.

It is an arithmetic number, because the mean of its divisors is an integer number (4339566).

Almost surely, 2^212043312 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 212043312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (347165280).

212043312 is an abundant number, since it is smaller than the sum of its proper divisors (482287248).

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

212043312 is a wasteful number, since it uses less digits than its factorization.

212043312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2268 (or 2256 counting only the distinct ones).

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

The square root of 212043312 is about 14561.7070427886. The cubic root of 212043312 is about 596.3137995890.

Adding to 212043312 its reverse (213340212), we get a palindrome (425383524).

The spelling of 212043312 in words is "two hundred twelve million, forty-three thousand, three hundred twelve".