1317425281 has 2 divisors, whose sum is σ = 1317425282. Its totient is φ = 1317425280.

The previous prime is 1317425269. The next prime is 1317425297. The reversal of 1317425281 is 1825247131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 711822400 + 605602881 = 26680^2 + 24609^2 .

It is an emirp because it is prime and its reverse (1825247131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1317425281 - 2⁹ = 1317424769 is a prime.

It is a super-2 number, since 2×1317425281² = 3471218742035857922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1317425231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658712640 + 658712641.

It is an arithmetic number, because the mean of its divisors is an integer number (658712641).

Almost surely, 2^1317425281 is an apocalyptic number.

It is an amenable number.

1317425281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317425281 is an equidigital number, since it uses as much as digits as its factorization.

1317425281 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 34.

The square root of 1317425281 is about 36296.3535496336. The cubic root of 1317425281 is about 1096.2476222359.

The spelling of 1317425281 in words is "one billion, three hundred seventeen million, four hundred twenty-five thousand, two hundred eighty-one".