171200731613 has 2 divisors, whose sum is σ = 171200731614. Its totient is φ = 171200731612.

The previous prime is 171200731601. The next prime is 171200731627. The reversal of 171200731613 is 316137002171.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153101603524 + 18099128089 = 391282^2 + 134533^2 .

It is an emirp because it is prime and its reverse (316137002171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171200731613 - 2¹² = 171200727517 is a prime.

It is a super-3 number, since 3×171200731613³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 171200731613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171200731643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85600365806 + 85600365807.

It is an arithmetic number, because the mean of its divisors is an integer number (85600365807).

Almost surely, 2^171200731613 is an apocalyptic number.

It is an amenable number.

171200731613 is a deficient number, since it is larger than the sum of its proper divisors (1).

171200731613 is an equidigital number, since it uses as much as digits as its factorization.

171200731613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 32.

Adding to 171200731613 its reverse (316137002171), we get a palindrome (487337733784).

The spelling of 171200731613 in words is "one hundred seventy-one billion, two hundred million, seven hundred thirty-one thousand, six hundred thirteen".