243321323213311 has 4 divisors (see below), whose sum is σ = 278081512243792. Its totient is φ = 208561134182832.

The previous prime is 243321323213303. The next prime is 243321323213347. The reversal of 243321323213311 is 113312323123342.

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 243321323213311 - 2³ = 243321323213303 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 (243321323216311) 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, 17380094515230 + ... + 17380094515243.

It is an arithmetic number, because the mean of its divisors is an integer number (69520378060948).

Almost surely, 2^{243321323213311} is an apocalyptic number.

243321323213311 is a deficient number, since it is larger than the sum of its proper divisors (34760189030481).

243321323213311 is an equidigital number, since it uses as much as digits as its factorization.

243321323213311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34760189030480.

The product of its digits is 46656, while the sum is 34.

Adding to 243321323213311 its reverse (113312323123342), we get a palindrome (356633646336653).

The spelling of 243321323213311 in words is "two hundred forty-three trillion, three hundred twenty-one billion, three hundred twenty-three million, two hundred thirteen thousand, three hundred eleven".