1323311213321 has 12 divisors (see below), whose sum is σ = 1384085687244. Its totient is φ = 1265029416000.

The previous prime is 1323311213311. The next prime is 1323311213327. The reversal of 1323311213321 is 1233121133231.

It can be written as a sum of positive squares in 6 ways, for example, as 165128449600 + 1158182763721 = 406360^2 + 1076189^2 .

It is not a de Polignac number, because 1323311213321 - 2¹⁴ = 1323311196937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323311213327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7704650 + ... + 7874531.

It is an arithmetic number, because the mean of its divisors is an integer number (115340473937).

Almost surely, 2^{1323311213321} is an apocalyptic number.

It is an amenable number.

1323311213321 is a deficient number, since it is larger than the sum of its proper divisors (60774473923).

1323311213321 is a wasteful number, since it uses less digits than its factorization.

1323311213321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15579340 (or 15579311 counting only the distinct ones).

The product of its digits is 1944, while the sum is 26.

Adding to 1323311213321 its reverse (1233121133231), we get a palindrome (2556432346552).

The spelling of 1323311213321 in words is "one trillion, three hundred twenty-three billion, three hundred eleven million, two hundred thirteen thousand, three hundred twenty-one".