1311441243040 has 192 divisors, whose sum is σ = 3328784605440. Its totient is φ = 486969753600.

The previous prime is 1311441243019. The next prime is 1311441243043. The reversal of 1311441243040 is 403421441131.

It is not an unprimeable number, because it can be changed into a prime (1311441243043) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54588151 + ... + 54612169.

It is an arithmetic number, because the mean of its divisors is an integer number (17337419820).

Almost surely, 2^{1311441243040} is an apocalyptic number.

1311441243040 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 1311441243040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1664392302720).

1311441243040 is an abundant number, since it is smaller than the sum of its proper divisors (2017343362400).

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

1311441243040 is a wasteful number, since it uses less digits than its factorization.

1311441243040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24495 (or 24487 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1311441243040 its reverse (403421441131), we get a palindrome (1714862684171).

The spelling of 1311441243040 in words is "one trillion, three hundred eleven billion, four hundred forty-one million, two hundred forty-three thousand, forty".