12313303320400 has 120 divisors (see below), whose sum is σ = 29792739794400. Its totient is φ = 4890378539520.

The previous prime is 12313303320377. The next prime is 12313303320407. The reversal of 12313303320400 is 402330331321.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12313303320407) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159868299 + ... + 159945301.

It is an arithmetic number, because the mean of its divisors is an integer number (248272831620).

Almost surely, 2^{12313303320400} is an apocalyptic number.

12313303320400 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 12313303320400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14896369897200).

12313303320400 is an abundant number, since it is smaller than the sum of its proper divisors (17479436474000).

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

12313303320400 is a wasteful number, since it uses less digits than its factorization.

12313303320400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79853 (or 79842 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 12313303320400 its reverse (402330331321), we get a palindrome (12715633651721).

The spelling of 12313303320400 in words is "twelve trillion, three hundred thirteen billion, three hundred three million, three hundred twenty thousand, four hundred".