1321323223 has 4 divisors (see below), whose sum is σ = 1441443528. Its totient is φ = 1201202920.

The previous prime is 1321323197. The next prime is 1321323299. The reversal of 1321323223 is 3223231231.

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 1321323223 - 2⁵ = 1321323191 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321323194 and 1321323203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321321223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60060136 + ... + 60060157.

It is an arithmetic number, because the mean of its divisors is an integer number (360360882).

Almost surely, 2^1321323223 is an apocalyptic number.

1321323223 is a deficient number, since it is larger than the sum of its proper divisors (120120305).

1321323223 is a wasteful number, since it uses less digits than its factorization.

1321323223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120120304.

The product of its digits is 1296, while the sum is 22.

The square root of 1321323223 is about 36350.0099449780. The cubic root of 1321323223 is about 1097.3277346490.

Adding to 1321323223 its reverse (3223231231), we get a palindrome (4544554454).

The spelling of 1321323223 in words is "one billion, three hundred twenty-one million, three hundred twenty-three thousand, two hundred twenty-three".