913231717 has 2 divisors, whose sum is σ = 913231718. Its totient is φ = 913231716.

The previous prime is 913231691. The next prime is 913231723. The reversal of 913231717 is 717132319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 519566436 + 393665281 = 22794^2 + 19841^2 .

It is a cyclic number.

It is not a de Polignac number, because 913231717 - 2⁷ = 913231589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (913231747) 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, 456615858 + 456615859.

It is an arithmetic number, because the mean of its divisors is an integer number (456615859).

Almost surely, 2^913231717 is an apocalyptic number.

It is an amenable number.

913231717 is a deficient number, since it is larger than the sum of its proper divisors (1).

913231717 is an equidigital number, since it uses as much as digits as its factorization.

913231717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7938, while the sum is 34.

The square root of 913231717 is about 30219.7239729287. The cubic root of 913231717 is about 970.1978967044.

The spelling of 913231717 in words is "nine hundred thirteen million, two hundred thirty-one thousand, seven hundred seventeen".