1317320589312 has 1088 divisors, whose sum is σ = 4911324741120. Its totient is φ = 343985356800.

The previous prime is 1317320589289. The next prime is 1317320589337. The reversal of 1317320589312 is 2139850237131.

1317320589312 is a `hidden beast` number, since 1 + 3 + 1 + 7 + 32 + 0 + 589 + 31 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13042778062 + ... + 13042778162.

It is an arithmetic number, because the mean of its divisors is an integer number (4514085240).

Almost surely, 2^{1317320589312} is an apocalyptic number.

1317320589312 is a gapful number since it is divisible by the number (12) 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 1317320589312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2455662370560).

1317320589312 is an abundant number, since it is smaller than the sum of its proper divisors (3594004151808).

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

1317320589312 is an frugal number, since it uses more digits than its factorization.

1317320589312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 1317320589312 in words is "one trillion, three hundred seventeen billion, three hundred twenty million, five hundred eighty-nine thousand, three hundred twelve".