1317141509 has 2 divisors, whose sum is σ = 1317141510. Its totient is φ = 1317141508.

The previous prime is 1317141499. The next prime is 1317141533. The reversal of 1317141509 is 9051417131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 828864100 + 488277409 = 28790^2 + 22097^2 .

It is a cyclic number.

It is not a de Polignac number, because 1317141509 - 2¹⁶ = 1317075973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317141569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658570754 + 658570755.

It is an arithmetic number, because the mean of its divisors is an integer number (658570755).

Almost surely, 2^1317141509 is an apocalyptic number.

It is an amenable number.

1317141509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317141509 is an equidigital number, since it uses as much as digits as its factorization.

1317141509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 32.

The square root of 1317141509 is about 36292.4442411916. Note that the first 3 decimals coincide. The cubic root of 1317141509 is about 1096.1689063945.

The spelling of 1317141509 in words is "one billion, three hundred seventeen million, one hundred forty-one thousand, five hundred nine".