1323743400000 has 1008 divisors, whose sum is σ = 5596531799040. Its totient is φ = 292723200000.

The previous prime is 1323743399999. The next prime is 1323743400037. The reversal of 1323743400000 is 43473231.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 390598306 + ... + 390601694.

It is an arithmetic number, because the mean of its divisors is an integer number (5552114880).

Almost surely, 2^{1323743400000} is an apocalyptic number.

1323743400000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323743400000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2798265899520).

1323743400000 is an abundant number, since it is smaller than the sum of its proper divisors (4272788399040).

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

1323743400000 is an equidigital number, since it uses as much as digits as its factorization.

1323743400000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3470 (or 3437 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

Adding to 1323743400000 its reverse (43473231), we get a palindrome (1323786873231).

The spelling of 1323743400000 in words is "one trillion, three hundred twenty-three billion, seven hundred forty-three million, four hundred thousand".