206113543 has 2 divisors, whose sum is σ = 206113544. Its totient is φ = 206113542.

The previous prime is 206113541. The next prime is 206113547. The reversal of 206113543 is 345311602.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 206113543 - 2¹ = 206113541 is a prime.

Together with 206113541, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206113541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103056771 + 103056772.

It is an arithmetic number, because the mean of its divisors is an integer number (103056772).

Almost surely, 2^206113543 is an apocalyptic number.

206113543 is a deficient number, since it is larger than the sum of its proper divisors (1).

206113543 is an equidigital number, since it uses as much as digits as its factorization.

206113543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 206113543 is about 14356.6550073476. The cubic root of 206113543 is about 590.7025462340.

The spelling of 206113543 in words is "two hundred six million, one hundred thirteen thousand, five hundred forty-three".