212843563 has 2 divisors, whose sum is σ = 212843564. Its totient is φ = 212843562.

The previous prime is 212843509. The next prime is 212843569. The reversal of 212843563 is 365348212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212843563 - 2¹⁷ = 212712491 is a prime.

It is not a weakly prime, because it can be changed into another prime (212843569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106421781 + 106421782.

It is an arithmetic number, because the mean of its divisors is an integer number (106421782).

Almost surely, 2^212843563 is an apocalyptic number.

212843563 is a deficient number, since it is larger than the sum of its proper divisors (1).

212843563 is an equidigital number, since it uses as much as digits as its factorization.

212843563 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 34.

The square root of 212843563 is about 14589.1590915995. The cubic root of 212843563 is about 597.0630201881.

The spelling of 212843563 in words is "two hundred twelve million, eight hundred forty-three thousand, five hundred sixty-three".