213204539 has 2 divisors, whose sum is σ = 213204540. Its totient is φ = 213204538.

The previous prime is 213204499. The next prime is 213204617. The reversal of 213204539 is 935402312.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213204539 - 2²⁴ = 196427323 is a prime.

It is not a weakly prime, because it can be changed into another prime (213204139) 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, 106602269 + 106602270.

It is an arithmetic number, because the mean of its divisors is an integer number (106602270).

Almost surely, 2^213204539 is an apocalyptic number.

213204539 is a deficient number, since it is larger than the sum of its proper divisors (1).

213204539 is an equidigital number, since it uses as much as digits as its factorization.

213204539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 213204539 is about 14601.5252285506. The cubic root of 213204539 is about 597.4003629310.

The spelling of 213204539 in words is "two hundred thirteen million, two hundred four thousand, five hundred thirty-nine".