1213324112311 has 4 divisors (see below), whose sum is σ = 1214295550000. Its totient is φ = 1212352674624.

The previous prime is 1213324112267. The next prime is 1213324112321. The reversal of 1213324112311 is 1132114233121.

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 1213324112311 - 2⁹ = 1213324111799 is a prime.

It is a super-2 number, since 2×1213324112311² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213324112321) 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, 485716971 + ... + 485719468.

It is an arithmetic number, because the mean of its divisors is an integer number (303573887500).

Almost surely, 2^{1213324112311} is an apocalyptic number.

1213324112311 is a deficient number, since it is larger than the sum of its proper divisors (971437689).

1213324112311 is an equidigital number, since it uses as much as digits as its factorization.

1213324112311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971437688.

The product of its digits is 864, while the sum is 25.

Adding to 1213324112311 its reverse (1132114233121), we get a palindrome (2345438345432).

The spelling of 1213324112311 in words is "one trillion, two hundred thirteen billion, three hundred twenty-four million, one hundred twelve thousand, three hundred eleven".