3121041440000 has 180 divisors, whose sum is σ = 8492592625440. Its totient is φ = 1134923520000.

The previous prime is 3121041439973. The next prime is 3121041440039. The reversal of 3121041440000 is 441401213.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 873341 + ... + 2646659.

Almost surely, 2^{3121041440000} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3121041440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4246296312720).

3121041440000 is an abundant number, since it is smaller than the sum of its proper divisors (5371551185440).

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

3121041440000 is an equidigital number, since it uses as much as digits as its factorization.

3121041440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1773366 (or 1773337 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 3121041440000 its reverse (441401213), we get a palindrome (3121482841213).

The spelling of 3121041440000 in words is "three trillion, one hundred twenty-one billion, forty-one million, four hundred forty thousand".