1311382317480 has 128 divisors (see below), whose sum is σ = 3985293312000. Its totient is φ = 345177752832.

The previous prime is 1311382317467. The next prime is 1311382317503. The reversal of 1311382317480 is 847132831131.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3621721 + ... + 3967319.

It is an arithmetic number, because the mean of its divisors is an integer number (31135104000).

Almost surely, 2^{1311382317480} is an apocalyptic number.

1311382317480 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 1311382317480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1992646656000).

1311382317480 is an abundant number, since it is smaller than the sum of its proper divisors (2673910994520).

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

1311382317480 is a wasteful number, since it uses less digits than its factorization.

1311382317480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346023 (or 346019 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 1311382317480 in words is "one trillion, three hundred eleven billion, three hundred eighty-two million, three hundred seventeen thousand, four hundred eighty".