212684047 has 2 divisors, whose sum is σ = 212684048. Its totient is φ = 212684046.

The previous prime is 212684033. The next prime is 212684051. The reversal of 212684047 is 740486212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212684047 - 2¹⁵ = 212651279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212684947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106342023 + 106342024.

It is an arithmetic number, because the mean of its divisors is an integer number (106342024).

Almost surely, 2^212684047 is an apocalyptic number.

212684047 is a deficient number, since it is larger than the sum of its proper divisors (1).

212684047 is an equidigital number, since it uses as much as digits as its factorization.

212684047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 212684047 is about 14583.6911308489. The cubic root of 212684047 is about 596.9138262510.

The spelling of 212684047 in words is "two hundred twelve million, six hundred eighty-four thousand, forty-seven".