197741317 has 2 divisors, whose sum is σ = 197741318. Its totient is φ = 197741316.

The previous prime is 197741309. The next prime is 197741329. The reversal of 197741317 is 713147791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196868961 + 872356 = 14031^2 + 934^2 .

It is an emirp because it is prime and its reverse (713147791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197741317 - 2³ = 197741309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 197741317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197741347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98870658 + 98870659.

It is an arithmetic number, because the mean of its divisors is an integer number (98870659).

Almost surely, 2^197741317 is an apocalyptic number.

It is an amenable number.

197741317 is a deficient number, since it is larger than the sum of its proper divisors (1).

197741317 is an equidigital number, since it uses as much as digits as its factorization.

197741317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37044, while the sum is 40.

The square root of 197741317 is about 14062.0523750980. The cubic root of 197741317 is about 582.5937314706.

The spelling of 197741317 in words is "one hundred ninety-seven million, seven hundred forty-one thousand, three hundred seventeen".