213606539 has 2 divisors, whose sum is σ = 213606540. Its totient is φ = 213606538.

The previous prime is 213606521. The next prime is 213606551. The reversal of 213606539 is 935606312.

213606539 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 213606539 - 2²⁰ = 212557963 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 213606499 and 213606508.

It is not a weakly prime, because it can be changed into another prime (213606739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106803269 + 106803270.

It is an arithmetic number, because the mean of its divisors is an integer number (106803270).

Almost surely, 2^213606539 is an apocalyptic number.

213606539 is a deficient number, since it is larger than the sum of its proper divisors (1).

213606539 is an equidigital number, since it uses as much as digits as its factorization.

213606539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 213606539 is about 14615.2844310332. The cubic root of 213606539 is about 597.7755959763.

The spelling of 213606539 in words is "two hundred thirteen million, six hundred six thousand, five hundred thirty-nine".