1323120320312 has 32 divisors (see below), whose sum is σ = 2836312543200. Its totient is φ = 566840623104.

The previous prime is 1323120320311. The next prime is 1323120320371. The reversal of 1323120320312 is 2130230213231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323120320311) 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 7 ways as a sum of consecutive naturals, for example, 4242713 + ... + 4543880.

It is an arithmetic number, because the mean of its divisors is an integer number (88634766975).

Almost surely, 2^{1323120320312} is an apocalyptic number.

It is an amenable number.

1323120320312 is an abundant number, since it is smaller than the sum of its proper divisors (1513192222888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1323120320312 is a wasteful number, since it uses less digits than its factorization.

1323120320312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8789295 (or 8789291 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1323120320312 its reverse (2130230213231), we get a palindrome (3453350533543).

The spelling of 1323120320312 in words is "one trillion, three hundred twenty-three billion, one hundred twenty million, three hundred twenty thousand, three hundred twelve".