1323244140400 has 240 divisors, whose sum is σ = 3943553818624. Its totient is φ = 415485987840.

The previous prime is 1323244140373. The next prime is 1323244140401. The reversal of 1323244140400 is 40414423231.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323244140401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4479679 + ... + 4765921.

Almost surely, 2^{1323244140400} is an apocalyptic number.

1323244140400 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 1323244140400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1971776909312).

1323244140400 is an abundant number, since it is smaller than the sum of its proper divisors (2620309678224).

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

1323244140400 is a wasteful number, since it uses less digits than its factorization.

1323244140400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286408 (or 286397 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 1323244140400 its reverse (40414423231), we get a palindrome (1363658563631).

It can be divided in two parts, 132324 and 4140400, that added together give a palindrome (4272724).

The spelling of 1323244140400 in words is "one trillion, three hundred twenty-three billion, two hundred forty-four million, one hundred forty thousand, four hundred".