213124343 has 4 divisors (see below), whose sum is σ = 216736680. Its totient is φ = 209512008.

The previous prime is 213124333. The next prime is 213124357. The reversal of 213124343 is 343421312.

213124343 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213124343 - 2¹⁰ = 213123319 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 (213124313) 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, 1806080 + ... + 1806197.

It is an arithmetic number, because the mean of its divisors is an integer number (54184170).

Almost surely, 2^213124343 is an apocalyptic number.

213124343 is a deficient number, since it is larger than the sum of its proper divisors (3612337).

213124343 is an equidigital number, since it uses as much as digits as its factorization.

213124343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3612336.

The product of its digits is 1728, while the sum is 23.

The square root of 213124343 is about 14598.7788187917. The cubic root of 213124343 is about 597.3254503174.

Adding to 213124343 its reverse (343421312), we get a palindrome (556545655).

The spelling of 213124343 in words is "two hundred thirteen million, one hundred twenty-four thousand, three hundred forty-three".