1312331224000 has 112 divisors (see below), whose sum is σ = 3279806861760. Its totient is φ = 520116249600.

The previous prime is 1312331223991. The next prime is 1312331224007. The reversal of 1312331224000 is 4221332131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312331224007) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119517 + ... + 1624483.

Almost surely, 2^{1312331224000} is an apocalyptic number.

1312331224000 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 1312331224000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1639903430880).

1312331224000 is an abundant number, since it is smaller than the sum of its proper divisors (1967475637760).

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

1312331224000 is a wasteful number, since it uses less digits than its factorization.

1312331224000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505103 (or 1505083 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1312331224000 its reverse (4221332131), we get a palindrome (1316552556131).

The spelling of 1312331224000 in words is "one trillion, three hundred twelve billion, three hundred thirty-one million, two hundred twenty-four thousand".