1323103311200 has 72 divisors (see below), whose sum is σ = 3523664705400. Its totient is φ = 481128473600.

The previous prime is 1323103311199. The next prime is 1323103311247. The reversal of 1323103311200 is 21133013231.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 75167525 + ... + 75185124.

It is an arithmetic number, because the mean of its divisors is an integer number (48939787575).

Almost surely, 2^{1323103311200} is an apocalyptic number.

1323103311200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1323103311200 is an abundant number, since it is smaller than the sum of its proper divisors (2200561394200).

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

1323103311200 is a wasteful number, since it uses less digits than its factorization.

1323103311200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150352680 (or 150352667 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 1323103311200 its reverse (21133013231), we get a palindrome (1344236324431).

The spelling of 1323103311200 in words is "one trillion, three hundred twenty-three billion, one hundred three million, three hundred eleven thousand, two hundred".