213530543 has 4 divisors (see below), whose sum is σ = 214088448. Its totient is φ = 212972640.

The previous prime is 213530533. The next prime is 213530593. The reversal of 213530543 is 345035312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 213530543 - 2⁶ = 213530479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213530503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278378 + ... + 279143.

It is an arithmetic number, because the mean of its divisors is an integer number (53522112).

Almost surely, 2^213530543 is an apocalyptic number.

213530543 is a deficient number, since it is larger than the sum of its proper divisors (557905).

213530543 is an equidigital number, since it uses as much as digits as its factorization.

213530543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557904.

The product of its (nonzero) digits is 5400, while the sum is 26.

The square root of 213530543 is about 14612.6843187691. The cubic root of 213530543 is about 597.7046962387.

Adding to 213530543 its reverse (345035312), we get a palindrome (558565855).

The spelling of 213530543 in words is "two hundred thirteen million, five hundred thirty thousand, five hundred forty-three".