1323220103 has 4 divisors (see below), whose sum is σ = 1324968840. Its totient is φ = 1321471368.

The previous prime is 1323220099. The next prime is 1323220121. The reversal of 1323220103 is 3010223231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3010223231 = 409 ⋅7359959.

It is a cyclic number.

It is not a de Polignac number, because 1323220103 - 2² = 1323220099 is a prime.

It is a super-2 number, since 2×1323220103² = 3501822881966661218, which 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 (1323220133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 873233 + ... + 874746.

It is an arithmetic number, because the mean of its divisors is an integer number (331242210).

Almost surely, 2^1323220103 is an apocalyptic number.

1323220103 is a deficient number, since it is larger than the sum of its proper divisors (1748737).

1323220103 is an equidigital number, since it uses as much as digits as its factorization.

1323220103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1748736.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1323220103 is about 36376.0924646944. The cubic root of 1323220103 is about 1097.8525882528.

Adding to 1323220103 its reverse (3010223231), we get a palindrome (4333443334).

The spelling of 1323220103 in words is "one billion, three hundred twenty-three million, two hundred twenty thousand, one hundred three".