212543030 has 32 divisors (see below), whose sum is σ = 452312640. Its totient is φ = 70358400.

The previous prime is 212542999. The next prime is 212543047. The reversal of 212543030 is 30345212.

It is a happy number.

212543030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212542993 and 212543011.

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, 50321 + ... + 54380.

It is an arithmetic number, because the mean of its divisors is an integer number (14134770).

Almost surely, 2^212543030 is an apocalyptic number.

212543030 is an abundant number, since it is smaller than the sum of its proper divisors (239769610).

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

212543030 is a wasteful number, since it uses less digits than its factorization.

212543030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104744.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 212543030 is about 14578.8555792284. The cubic root of 212543030 is about 596.7818721329.

Adding to 212543030 its reverse (30345212), we get a palindrome (242888242).

The spelling of 212543030 in words is "two hundred twelve million, five hundred forty-three thousand, thirty".