1317775131 has 24 divisors (see below), whose sum is σ = 1938184976. Its totient is φ = 862539840.

The previous prime is 1317775127. The next prime is 1317775139. The reversal of 1317775131 is 1315777131.

1317775131 is a `hidden beast` number, since 131 + 7 + 7 + 7 + 513 + 1 = 666.

It is not a de Polignac number, because 1317775131 - 2² = 1317775127 is a prime.

It is a super-2 number, since 2×1317775131² = 3473062591764134322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1317775139) 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 23 ways as a sum of consecutive naturals, for example, 351141 + ... + 354873.

Almost surely, 2^1317775131 is an apocalyptic number.

1317775131 is a deficient number, since it is larger than the sum of its proper divisors (620409845).

1317775131 is a wasteful number, since it uses less digits than its factorization.

1317775131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4443 (or 4440 counting only the distinct ones).

The product of its digits is 15435, while the sum is 36.

The square root of 1317775131 is about 36301.1725843670. The cubic root of 1317775131 is about 1096.3446519732.

The spelling of 1317775131 in words is "one billion, three hundred seventeen million, seven hundred seventy-five thousand, one hundred thirty-one".