213342543 has 12 divisors (see below), whose sum is σ = 313976520. Its totient is φ = 139544496.

The previous prime is 213342533. The next prime is 213342551. The reversal of 213342543 is 345243312.

It is not a de Polignac number, because 213342543 - 2²⁵ = 179788111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213342533) 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 in 11 ways as a sum of consecutive naturals, for example, 223153 + ... + 224106.

It is an arithmetic number, because the mean of its divisors is an integer number (26164710).

Almost surely, 2^213342543 is an apocalyptic number.

213342543 is a deficient number, since it is larger than the sum of its proper divisors (100633977).

213342543 is a wasteful number, since it uses less digits than its factorization.

213342543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447318 (or 447315 counting only the distinct ones).

The product of its digits is 8640, while the sum is 27.

The square root of 213342543 is about 14606.2501347882. The cubic root of 213342543 is about 597.5292311347.

Adding to 213342543 its reverse (345243312), we get a palindrome (558585855).

The spelling of 213342543 in words is "two hundred thirteen million, three hundred forty-two thousand, five hundred forty-three".