195312717 has 6 divisors (see below), whose sum is σ = 282118382. Its totient is φ = 130208472.

The previous prime is 195312713. The next prime is 195312721. The reversal of 195312717 is 717213591.

195312717 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (195312713) and next prime (195312721).

It can be written as a sum of positive squares in only one way, i.e., 113934276 + 81378441 = 10674^2 + 9021^2 .

It is not a de Polignac number, because 195312717 - 2² = 195312713 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 (195312713) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10850698 + ... + 10850715.

Almost surely, 2^195312717 is an apocalyptic number.

It is an amenable number.

195312717 is a deficient number, since it is larger than the sum of its proper divisors (86805665).

195312717 is a wasteful number, since it uses less digits than its factorization.

195312717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21701419 (or 21701416 counting only the distinct ones).

The product of its digits is 13230, while the sum is 36.

The square root of 195312717 is about 13975.4326229995. The cubic root of 195312717 is about 580.1988190761.

The spelling of 195312717 in words is "one hundred ninety-five million, three hundred twelve thousand, seven hundred seventeen".