171872341 has 4 divisors (see below), whose sum is σ = 172526112. Its totient is φ = 171218572.

The previous prime is 171872317. The next prime is 171872381. The reversal of 171872341 is 143278171.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 171872341 - 2¹⁹ = 171348053 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 171872297 and 171872306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171872381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 326491 + ... + 327016.

It is an arithmetic number, because the mean of its divisors is an integer number (43131528).

Almost surely, 2^171872341 is an apocalyptic number.

It is an amenable number.

171872341 is a deficient number, since it is larger than the sum of its proper divisors (653771).

171872341 is an equidigital number, since it uses as much as digits as its factorization.

171872341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 653770.

The product of its digits is 9408, while the sum is 34.

The square root of 171872341 is about 13110.0091914537. The cubic root of 171872341 is about 555.9921554455.

The spelling of 171872341 in words is "one hundred seventy-one million, eight hundred seventy-two thousand, three hundred forty-one".