231717071 has 2 divisors, whose sum is σ = 231717072. Its totient is φ = 231717070.

The previous prime is 231717061. The next prime is 231717077. The reversal of 231717071 is 170717132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231717071 - 2²⁶ = 164608207 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231717077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115858535 + 115858536.

It is an arithmetic number, because the mean of its divisors is an integer number (115858536).

Almost surely, 2^231717071 is an apocalyptic number.

231717071 is a deficient number, since it is larger than the sum of its proper divisors (1).

231717071 is an equidigital number, since it uses as much as digits as its factorization.

231717071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2058, while the sum is 29.

The square root of 231717071 is about 15222.2557789573. The cubic root of 231717071 is about 614.2134797572.

The spelling of 231717071 in words is "two hundred thirty-one million, seven hundred seventeen thousand, seventy-one".