212543700 has 36 divisors (see below), whose sum is σ = 614960640. Its totient is φ = 56678240.

The previous prime is 212543689. The next prime is 212543717. The reversal of 212543700 is 7345212.

212543700 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 353940 + ... + 354539.

It is an arithmetic number, because the mean of its divisors is an integer number (17082240).

Almost surely, 2^212543700 is an apocalyptic number.

212543700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212543700 is an abundant number, since it is smaller than the sum of its proper divisors (402416940).

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

212543700 is a wasteful number, since it uses less digits than its factorization.

212543700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708496 (or 708489 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 212543700 is about 14578.8785576943. The cubic root of 212543700 is about 596.7824992113.

Adding to 212543700 its reverse (7345212), we get a palindrome (219888912).

The spelling of 212543700 in words is "two hundred twelve million, five hundred forty-three thousand, seven hundred".