1317082681 has 8 divisors (see below), whose sum is σ = 1321984800. Its totient is φ = 1312190208.

The previous prime is 1317082661. The next prime is 1317082691. The reversal of 1317082681 is 1862807131.

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 1317082681 - 2⁷ = 1317082553 is a prime.

It is a super-2 number, since 2×1317082681² = 3469413577180295522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1317082681.

It is not an unprimeable number, because it can be changed into a prime (1317082601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 369550 + ... + 373096.

It is an arithmetic number, because the mean of its divisors is an integer number (165248100).

Almost surely, 2^1317082681 is an apocalyptic number.

It is an amenable number.

1317082681 is a deficient number, since it is larger than the sum of its proper divisors (4902119).

1317082681 is an equidigital number, since it uses as much as digits as its factorization.

1317082681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 1317082681 is about 36291.6337604137. The cubic root of 1317082681 is about 1096.1525866131.

The spelling of 1317082681 in words is "one billion, three hundred seventeen million, eighty-two thousand, six hundred eighty-one".