317104561 has 2 divisors, whose sum is σ = 317104562. Its totient is φ = 317104560.

The previous prime is 317104559. The next prime is 317104573. The reversal of 317104561 is 165401713.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 222159025 + 94945536 = 14905^2 + 9744^2 .

It is a cyclic number.

It is not a de Polignac number, because 317104561 - 2¹ = 317104559 is a prime.

Together with 317104559, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (317104511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 158552280 + 158552281.

It is an arithmetic number, because the mean of its divisors is an integer number (158552281).

Almost surely, 2^317104561 is an apocalyptic number.

It is an amenable number.

317104561 is a deficient number, since it is larger than the sum of its proper divisors (1).

317104561 is an equidigital number, since it uses as much as digits as its factorization.

317104561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 317104561 is about 17807.4299380904. The cubic root of 317104561 is about 681.9211538436.

The spelling of 317104561 in words is "three hundred seventeen million, one hundred four thousand, five hundred sixty-one".