1312240403200 has 216 divisors, whose sum is σ = 3319827517440. Its totient is φ = 513405849600.

The previous prime is 1312240403171. The next prime is 1312240403237. The reversal of 1312240403200 is 23040422131.

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 23 ways as a sum of consecutive naturals, for example, 57697431 + ... + 57720169.

It is an arithmetic number, because the mean of its divisors is an integer number (15369571840).

Almost surely, 2^{1312240403200} is an apocalyptic number.

1312240403200 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 1312240403200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1659913758720).

1312240403200 is an abundant number, since it is smaller than the sum of its proper divisors (2007587114240).

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

1312240403200 is a wasteful number, since it uses less digits than its factorization.

1312240403200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22963 (or 22944 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 1312240403200 its reverse (23040422131), we get a palindrome (1335280825331).

The spelling of 1312240403200 in words is "one trillion, three hundred twelve billion, two hundred forty million, four hundred three thousand, two hundred".