1317291001 has 4 divisors (see below), whose sum is σ = 1418621092. Its totient is φ = 1215960912.

The previous prime is 1317290987. The next prime is 1317291007. The reversal of 1317291001 is 1001927131.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1001927131 = 541 ⋅1851991.

It can be written as a sum of positive squares in 2 ways, for example, as 508457401 + 808833600 = 22549^2 + 28440^2 .

It is a cyclic number.

It is not a de Polignac number, because 1317291001 - 2⁵ = 1317290969 is a prime.

It is a super-4 number, since 4×1317291001⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1317291007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50665026 + ... + 50665051.

It is an arithmetic number, because the mean of its divisors is an integer number (354655273).

Almost surely, 2^1317291001 is an apocalyptic number.

It is an amenable number.

1317291001 is a deficient number, since it is larger than the sum of its proper divisors (101330091).

1317291001 is a wasteful number, since it uses less digits than its factorization.

1317291001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101330090.

The product of its (nonzero) digits is 378, while the sum is 25.

The square root of 1317291001 is about 36294.5037299038. The cubic root of 1317291001 is about 1096.2103755613.

The spelling of 1317291001 in words is "one billion, three hundred seventeen million, two hundred ninety-one thousand, one".