213204311323 has 4 divisors (see below), whose sum is σ = 213225075448. Its totient is φ = 213183547200.

The previous prime is 213204311311. The next prime is 213204311371. The reversal of 213204311323 is 323113402312.

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 213204311323 - 2²⁵ = 213170756891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213204311623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10366653 + ... + 10387198.

It is an arithmetic number, because the mean of its divisors is an integer number (53306268862).

Almost surely, 2^213204311323 is an apocalyptic number.

213204311323 is a deficient number, since it is larger than the sum of its proper divisors (20764125).

213204311323 is a wasteful number, since it uses less digits than its factorization.

213204311323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20764124.

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 213204311323 its reverse (323113402312), we get a palindrome (536317713635).

The spelling of 213204311323 in words is "two hundred thirteen billion, two hundred four million, three hundred eleven thousand, three hundred twenty-three".