1323404123 has 4 divisors (see below), whose sum is σ = 1359171840. Its totient is φ = 1287636408.

The previous prime is 1323404119. The next prime is 1323404149. The reversal of 1323404123 is 3214043231.

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

It is not a de Polignac number, because 1323404123 - 2² = 1323404119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323409123) 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, 17883803 + ... + 17883876.

It is an arithmetic number, because the mean of its divisors is an integer number (339792960).

Almost surely, 2^1323404123 is an apocalyptic number.

1323404123 is a deficient number, since it is larger than the sum of its proper divisors (35767717).

1323404123 is an equidigital number, since it uses as much as digits as its factorization.

1323404123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35767716.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1323404123 is about 36378.6217853288. The cubic root of 1323404123 is about 1097.9034786195.

Adding to 1323404123 its reverse (3214043231), we get a palindrome (4537447354).

The spelling of 1323404123 in words is "one billion, three hundred twenty-three million, four hundred four thousand, one hundred twenty-three".