1317332551 has 8 divisors (see below), whose sum is σ = 1322418240. Its totient is φ = 1312256352.

The previous prime is 1317332503. The next prime is 1317332581. The reversal of 1317332551 is 1552337131.

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 1317332551 - 2¹¹ = 1317330503 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 (1317332581) 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, 392386 + ... + 395728.

It is an arithmetic number, because the mean of its divisors is an integer number (165302280).

Almost surely, 2^1317332551 is an apocalyptic number.

1317332551 is a deficient number, since it is larger than the sum of its proper divisors (5085689).

1317332551 is a wasteful number, since it uses less digits than its factorization.

1317332551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4745.

The product of its digits is 9450, while the sum is 31.

The square root of 1317332551 is about 36295.0761261083. The cubic root of 1317332551 is about 1096.2219009980.

Adding to 1317332551 its reverse (1552337131), we get a palindrome (2869669682).

The spelling of 1317332551 in words is "one billion, three hundred seventeen million, three hundred thirty-two thousand, five hundred fifty-one".