238287775205317 has 2 divisors, whose sum is σ = 238287775205318. Its totient is φ = 238287775205316.

The previous prime is 238287775205171. The next prime is 238287775205351. The reversal of 238287775205317 is 713502577782832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 237269383409601 + 1018391795716 = 15403551^2 + 1009154^2 .

It is a cyclic number.

It is not a de Polignac number, because 238287775205317 - 2¹⁹ = 238287774681029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (238287775206317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119143887602658 + 119143887602659.

It is an arithmetic number, because the mean of its divisors is an integer number (119143887602659).

Almost surely, 2^{238287775205317} is an apocalyptic number.

It is an amenable number.

238287775205317 is a deficient number, since it is larger than the sum of its proper divisors (1).

238287775205317 is an equidigital number, since it uses as much as digits as its factorization.

238287775205317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276595200, while the sum is 67.

The spelling of 238287775205317 in words is "two hundred thirty-eight trillion, two hundred eighty-seven billion, seven hundred seventy-five million, two hundred five thousand, three hundred seventeen".