1311722743980 has 48 divisors (see below), whose sum is σ = 4006716747264. Its totient is φ = 317993392320.

The previous prime is 1311722743963. The next prime is 1311722744071. The reversal of 1311722743980 is 893472271131.

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 15 ways as a sum of consecutive naturals, for example, 993728692 + ... + 993730011.

It is an arithmetic number, because the mean of its divisors is an integer number (83473265568).

Almost surely, 2^{1311722743980} is an apocalyptic number.

1311722743980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1311722743980 is an abundant number, since it is smaller than the sum of its proper divisors (2694994003284).

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

1311722743980 is a wasteful number, since it uses less digits than its factorization.

1311722743980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1987458726 (or 1987458724 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 48.

The spelling of 1311722743980 in words is "one trillion, three hundred eleven billion, seven hundred twenty-two million, seven hundred forty-three thousand, nine hundred eighty".