1317750023491 has 8 divisors (see below), whose sum is σ = 1439668893744. Its totient is φ = 1196185055520.

The previous prime is 1317750023479. The next prime is 1317750023501. The reversal of 1317750023491 is 1943200577131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1317750023491 - 2⁵ = 1317750023459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1317750023791) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88467780 + ... + 88482673.

It is an arithmetic number, because the mean of its divisors is an integer number (179958611718).

Almost surely, 2^{1317750023491} is an apocalyptic number.

1317750023491 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1317750023491 is a deficient number, since it is larger than the sum of its proper divisors (121918870253).

1317750023491 is a wasteful number, since it uses less digits than its factorization.

1317750023491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176951141.

The product of its (nonzero) digits is 158760, while the sum is 43.

The spelling of 1317750023491 in words is "one trillion, three hundred seventeen billion, seven hundred fifty million, twenty-three thousand, four hundred ninety-one".