1323220203323 has 4 divisors (see below), whose sum is σ = 1326363244608. Its totient is φ = 1320077162040.

The previous prime is 1323220203293. The next prime is 1323220203353. The reversal of 1323220203323 is 3233020223231.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1323220203293) and next prime (1323220203353).

It is a cyclic number.

It is not a de Polignac number, because 1323220203323 - 2¹⁰ = 1323220202299 is a prime.

It is a super-2 number, since 2×1323220203323² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1323220203292 and 1323220203301.

It is not an unprimeable number, because it can be changed into a prime (1323220203353) 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, 1571520011 + ... + 1571520852.

It is an arithmetic number, because the mean of its divisors is an integer number (331590811152).

Almost surely, 2^{1323220203323} is an apocalyptic number.

1323220203323 is a deficient number, since it is larger than the sum of its proper divisors (3143041285).

1323220203323 is an equidigital number, since it uses as much as digits as its factorization.

1323220203323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3143041284.

The product of its (nonzero) digits is 7776, while the sum is 26.

Adding to 1323220203323 its reverse (3233020223231), we get a palindrome (4556240426554).

The spelling of 1323220203323 in words is "one trillion, three hundred twenty-three billion, two hundred twenty million, two hundred three thousand, three hundred twenty-three".