213404430004343 has 4 divisors (see below), whose sum is σ = 213413277274848. Its totient is φ = 213395582733840.

The previous prime is 213404430004313. The next prime is 213404430004349. The reversal of 213404430004343 is 343400034404312.

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 213404430004343 - 2¹⁸ = 213404429742199 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 (213404430004349) 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, 4423599071 + ... + 4423647312.

It is an arithmetic number, because the mean of its divisors is an integer number (53353319318712).

Almost surely, 2^{213404430004343} is an apocalyptic number.

213404430004343 is a deficient number, since it is larger than the sum of its proper divisors (8847270505).

213404430004343 is an equidigital number, since it uses as much as digits as its factorization.

213404430004343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8847270504.

The product of its (nonzero) digits is 165888, while the sum is 35.

Adding to 213404430004343 its reverse (343400034404312), we get a palindrome (556804464408655).

The spelling of 213404430004343 in words is "two hundred thirteen trillion, four hundred four billion, four hundred thirty million, four thousand, three hundred forty-three".