1213323321323 has 16 divisors (see below), whose sum is σ = 1232978345280. Its totient is φ = 1193809689600.

The previous prime is 1213323321257. The next prime is 1213323321341. The reversal of 1213323321323 is 3231233233121.

It is a cyclic number.

It is not a de Polignac number, because 1213323321323 - 2¹⁴ = 1213323304939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1215323321323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29300093 + ... + 29341473.

It is an arithmetic number, because the mean of its divisors is an integer number (77061146580).

Almost surely, 2^{1213323321323} is an apocalyptic number.

1213323321323 is a deficient number, since it is larger than the sum of its proper divisors (19655023957).

1213323321323 is a wasteful number, since it uses less digits than its factorization.

1213323321323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43078.

The product of its digits is 11664, while the sum is 29.

Adding to 1213323321323 its reverse (3231233233121), we get a palindrome (4444556554444).

The spelling of 1213323321323 in words is "one trillion, two hundred thirteen billion, three hundred twenty-three million, three hundred twenty-one thousand, three hundred twenty-three".