1317362873 has 2 divisors, whose sum is σ = 1317362874. Its totient is φ = 1317362872.

The previous prime is 1317362869. The next prime is 1317362899. The reversal of 1317362873 is 3782637131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1290030889 + 27331984 = 35917^2 + 5228^2 .

It is a cyclic number.

It is not a de Polignac number, because 1317362873 - 2² = 1317362869 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1317362873.

It is not a weakly prime, because it can be changed into another prime (1317362843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658681436 + 658681437.

It is an arithmetic number, because the mean of its divisors is an integer number (658681437).

Almost surely, 2^1317362873 is an apocalyptic number.

It is an amenable number.

1317362873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317362873 is an equidigital number, since it uses as much as digits as its factorization.

1317362873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 41.

The square root of 1317362873 is about 36295.4938387674. The cubic root of 1317362873 is about 1096.2303117787.

The spelling of 1317362873 in words is "one billion, three hundred seventeen million, three hundred sixty-two thousand, eight hundred seventy-three".