1323323123 has 4 divisors (see below), whose sum is σ = 1324336920. Its totient is φ = 1322309328.

The previous prime is 1323323021. The next prime is 1323323137. The reversal of 1323323123 is 3213233231.

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 1323323123 - 2¹⁶ = 1323257587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323325123) 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, 504938 + ... + 507551.

It is an arithmetic number, because the mean of its divisors is an integer number (331084230).

Almost surely, 2^1323323123 is an apocalyptic number.

1323323123 is a deficient number, since it is larger than the sum of its proper divisors (1013797).

1323323123 is a wasteful number, since it uses less digits than its factorization.

1323323123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013796.

The product of its digits is 1944, while the sum is 23.

The square root of 1323323123 is about 36377.5084770796. The cubic root of 1323323123 is about 1097.8810788112.

Adding to 1323323123 its reverse (3213233231), we get a palindrome (4536556354).

The spelling of 1323323123 in words is "one billion, three hundred twenty-three million, three hundred twenty-three thousand, one hundred twenty-three".