212543047 has 2 divisors, whose sum is σ = 212543048. Its totient is φ = 212543046.

The previous prime is 212542999. The next prime is 212543053. The reversal of 212543047 is 740345212.

212543047 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212543047 - 2¹⁹ = 212018759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212583047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106271523 + 106271524.

It is an arithmetic number, because the mean of its divisors is an integer number (106271524).

Almost surely, 2^212543047 is an apocalyptic number.

212543047 is a deficient number, since it is larger than the sum of its proper divisors (1).

212543047 is an equidigital number, since it uses as much as digits as its factorization.

212543047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 212543047 is about 14578.8561622646. The cubic root of 212543047 is about 596.7818880438.

Adding to 212543047 its reverse (740345212), we get a palindrome (952888259).

The spelling of 212543047 in words is "two hundred twelve million, five hundred forty-three thousand, forty-seven".