1317272387 has 8 divisors (see below), whose sum is σ = 1395166032. Its totient is φ = 1239424000.

The previous prime is 1317272351. The next prime is 1317272393. The reversal of 1317272387 is 7832727131.

It is a happy number.

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 1317272387 - 2¹² = 1317268291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1317272687) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 62387 + ... + 80787.

It is an arithmetic number, because the mean of its divisors is an integer number (174395754).

Almost surely, 2^1317272387 is an apocalyptic number.

1317272387 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1317272387 is a deficient number, since it is larger than the sum of its proper divisors (77893645).

1317272387 is a wasteful number, since it uses less digits than its factorization.

1317272387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22629.

The product of its digits is 98784, while the sum is 41.

The square root of 1317272387 is about 36294.2472989867. The cubic root of 1317272387 is about 1096.2052121980.

The spelling of 1317272387 in words is "one billion, three hundred seventeen million, two hundred seventy-two thousand, three hundred eighty-seven".