1317331648 has 28 divisors (see below), whose sum is σ = 2631643200. Its totient is φ = 654240512.

The previous prime is 1317331637. The next prime is 1317331663. The reversal of 1317331648 is 8461337131.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59536 + ... + 78607.

Almost surely, 2^1317331648 is an apocalyptic number.

It is an amenable number.

1317331648 is a deficient number, since it is larger than the sum of its proper divisors (1314311552).

1317331648 is a wasteful number, since it uses less digits than its factorization.

1317331648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138304 (or 138294 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 1317331648 is about 36295.0636864023. The cubic root of 1317331648 is about 1096.2216505200.

Adding to 1317331648 its reverse (8461337131), we get a palindrome (9778668779).

The spelling of 1317331648 in words is "one billion, three hundred seventeen million, three hundred thirty-one thousand, six hundred forty-eight".