212543232 has 144 divisors (see below), whose sum is σ = 624973440. Its totient is φ = 63590400.

The previous prime is 212543213. The next prime is 212543251. The reversal of 212543232 is 232345212.

It is an interprime number because it is at equal distance from previous prime (212543213) and next prime (212543251).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1174182 + ... + 1174362.

Almost surely, 2^212543232 is an apocalyptic number.

212543232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212543232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312486720).

212543232 is an abundant number, since it is smaller than the sum of its proper divisors (412430208).

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

212543232 is a wasteful number, since it uses less digits than its factorization.

212543232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350 (or 336 counting only the distinct ones).

The product of its digits is 2880, while the sum is 24.

The square root of 212543232 is about 14578.8625070682. The cubic root of 212543232 is about 596.7820611925.

Adding to 212543232 its reverse (232345212), we get a palindrome (444888444).

The spelling of 212543232 in words is "two hundred twelve million, five hundred forty-three thousand, two hundred thirty-two".