213243122054323 has 4 divisors (see below), whose sum is σ = 225786835116360. Its totient is φ = 200699408992288.

The previous prime is 213243122054299. The next prime is 213243122054387. The reversal of 213243122054323 is 323450221342312.

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 213243122054323 - 2²⁵ = 213243088499891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213243122054423) 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, 6271856530993 + ... + 6271856531026.

It is an arithmetic number, because the mean of its divisors is an integer number (56446708779090).

Almost surely, 2^{213243122054323} is an apocalyptic number.

213243122054323 is a deficient number, since it is larger than the sum of its proper divisors (12543713062037).

213243122054323 is a wasteful number, since it uses less digits than its factorization.

213243122054323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12543713062036.

The product of its (nonzero) digits is 207360, while the sum is 37.

Adding to 213243122054323 its reverse (323450221342312), we get a palindrome (536693343396635).

The spelling of 213243122054323 in words is "two hundred thirteen trillion, two hundred forty-three billion, one hundred twenty-two million, fifty-four thousand, three hundred twenty-three".