213204020343 has 4 divisors (see below), whose sum is σ = 284272027128. Its totient is φ = 142136013560.

The previous prime is 213204020339. The next prime is 213204020357. The reversal of 213204020343 is 343020402312.

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 213204020343 - 2² = 213204020339 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213204020363) 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, 35534003388 + ... + 35534003393.

It is an arithmetic number, because the mean of its divisors is an integer number (71068006782).

Almost surely, 2^213204020343 is an apocalyptic number.

213204020343 is a deficient number, since it is larger than the sum of its proper divisors (71068006785).

213204020343 is an equidigital number, since it uses as much as digits as its factorization.

213204020343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71068006784.

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 213204020343 its reverse (343020402312), we get a palindrome (556224422655).

The spelling of 213204020343 in words is "two hundred thirteen billion, two hundred four million, twenty thousand, three hundred forty-three".