1317440087 has 8 divisors (see below), whose sum is σ = 1349557200. Its totient is φ = 1285649344.

The previous prime is 1317440083. The next prime is 1317440099. The reversal of 1317440087 is 7800447131.

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 1317440087 - 2² = 1317440083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317440081) 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, 73412 + ... + 89577.

It is an arithmetic number, because the mean of its divisors is an integer number (168694650).

Almost surely, 2^1317440087 is an apocalyptic number.

1317440087 is a deficient number, since it is larger than the sum of its proper divisors (32117113).

1317440087 is a wasteful number, since it uses less digits than its factorization.

1317440087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163185.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 1317440087 is about 36296.5575089429. The cubic root of 1317440087 is about 1096.2517289790.

The spelling of 1317440087 in words is "one billion, three hundred seventeen million, four hundred forty thousand, eighty-seven".