231245575717 has 8 divisors (see below), whose sum is σ = 249701352824. Its totient is φ = 212885178048.

The previous prime is 231245575681. The next prime is 231245575733. The reversal of 231245575717 is 717575542132.

It can be written as a sum of positive squares in 4 ways, for example, as 66193512961 + 165052062756 = 257281^2 + 406266^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231245575717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231245575747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23839818 + ... + 23849515.

It is an arithmetic number, because the mean of its divisors is an integer number (31212669103).

Almost surely, 2^231245575717 is an apocalyptic number.

It is an amenable number.

231245575717 is a deficient number, since it is larger than the sum of its proper divisors (18455777107).

231245575717 is a wasteful number, since it uses less digits than its factorization.

231245575717 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47689719.

The product of its digits is 2058000, while the sum is 49.

The spelling of 231245575717 in words is "two hundred thirty-one billion, two hundred forty-five million, five hundred seventy-five thousand, seven hundred seventeen".