1323313200000 has 1920 divisors, whose sum is σ = 5553544550400. Its totient is φ = 310003200000.

The previous prime is 1323313199969. The next prime is 1323313200017. The reversal of 1323313200000 is 23133231.

1323313200000 is a `hidden beast` number, since 13 + 2 + 331 + 320 + 0 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1920).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 16750799961 + ... + 16750800039.

It is an arithmetic number, because the mean of its divisors is an integer number (2892471120).

Almost surely, 2^{1323313200000} is an apocalyptic number.

1323313200000 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 1323313200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2776772275200).

1323313200000 is an abundant number, since it is smaller than the sum of its proper divisors (4230231350400).

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

1323313200000 is an frugal number, since it uses more digits than its factorization.

1323313200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 1323313200000 its reverse (23133231), we get a palindrome (1323336333231).

The spelling of 1323313200000 in words is "one trillion, three hundred twenty-three billion, three hundred thirteen million, two hundred thousand".