171047213 has 8 divisors (see below), whose sum is σ = 172904256. Its totient is φ = 169200000.

The previous prime is 171047207. The next prime is 171047221. The reversal of 171047213 is 312740171.

It is a happy number.

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-171047213 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171047413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35645 + ... + 40157.

It is an arithmetic number, because the mean of its divisors is an integer number (21613032).

Almost surely, 2^171047213 is an apocalyptic number.

It is an amenable number.

171047213 is a deficient number, since it is larger than the sum of its proper divisors (1857043).

171047213 is a wasteful number, since it uses less digits than its factorization.

171047213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4915.

The product of its (nonzero) digits is 1176, while the sum is 26.

The square root of 171047213 is about 13078.5019402071. The cubic root of 171047213 is about 555.1009885758.

Adding to 171047213 its reverse (312740171), we get a palindrome (483787384).

The spelling of 171047213 in words is "one hundred seventy-one million, forty-seven thousand, two hundred thirteen".