123321231313 has 4 divisors (see below), whose sum is σ = 140938550080. Its totient is φ = 105703912548.

The previous prime is 123321231307. The next prime is 123321231367. The reversal of 123321231313 is 313132123321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123321231313 - 2³³ = 114731296721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123321234313) 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, 8808659373 + ... + 8808659386.

It is an arithmetic number, because the mean of its divisors is an integer number (35234637520).

Almost surely, 2^123321231313 is an apocalyptic number.

It is an amenable number.

123321231313 is a deficient number, since it is larger than the sum of its proper divisors (17617318767).

123321231313 is an equidigital number, since it uses as much as digits as its factorization.

123321231313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17617318766.

The product of its digits is 1944, while the sum is 25.

Adding to 123321231313 its reverse (313132123321), we get a palindrome (436453354634).

The spelling of 123321231313 in words is "one hundred twenty-three billion, three hundred twenty-one million, two hundred thirty-one thousand, three hundred thirteen".