1317567973 has 2 divisors, whose sum is σ = 1317567974. Its totient is φ = 1317567972.

The previous prime is 1317567971. The next prime is 1317567989. The reversal of 1317567973 is 3797657131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 786634209 + 530933764 = 28047^2 + 23042^2 .

It is an emirp because it is prime and its reverse (3797657131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1317567973 - 2¹ = 1317567971 is a prime.

Together with 1317567971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317567971) 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 as a sum of consecutive naturals, namely, 658783986 + 658783987.

It is an arithmetic number, because the mean of its divisors is an integer number (658783987).

Almost surely, 2^1317567973 is an apocalyptic number.

It is an amenable number.

1317567973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317567973 is an equidigital number, since it uses as much as digits as its factorization.

1317567973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 833490, while the sum is 49.

The square root of 1317567973 is about 36298.3191484124. The cubic root of 1317567973 is about 1096.2871994630.

The spelling of 1317567973 in words is "one billion, three hundred seventeen million, five hundred sixty-seven thousand, nine hundred seventy-three".