1323113203311 has 4 divisors (see below), whose sum is σ = 1764150937752. Its totient is φ = 882075468872.

The previous prime is 1323113203283. The next prime is 1323113203331. The reversal of 1323113203311 is 1133023113231.

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 1323113203311 - 2¹⁸ = 1323112941167 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323113203331) 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, 220518867216 + ... + 220518867221.

It is an arithmetic number, because the mean of its divisors is an integer number (441037734438).

Almost surely, 2^{1323113203311} is an apocalyptic number.

1323113203311 is a deficient number, since it is larger than the sum of its proper divisors (441037734441).

1323113203311 is an equidigital number, since it uses as much as digits as its factorization.

1323113203311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441037734440.

The product of its (nonzero) digits is 972, while the sum is 24.

Adding to 1323113203311 its reverse (1133023113231), we get a palindrome (2456136316542).

The spelling of 1323113203311 in words is "one trillion, three hundred twenty-three billion, one hundred thirteen million, two hundred three thousand, three hundred eleven".