171211043 has 4 divisors (see below), whose sum is σ = 172071600. Its totient is φ = 170350488.

The previous prime is 171211037. The next prime is 171211069. The reversal of 171211043 is 340112171.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 171211043 - 2¹⁰ = 171210019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171211003) 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, 429980 + ... + 430377.

It is an arithmetic number, because the mean of its divisors is an integer number (43017900).

Almost surely, 2^171211043 is an apocalyptic number.

171211043 is a deficient number, since it is larger than the sum of its proper divisors (860557).

171211043 is an equidigital number, since it uses as much as digits as its factorization.

171211043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860556.

The product of its (nonzero) digits is 168, while the sum is 20.

The square root of 171211043 is about 13084.7637731829. The cubic root of 171211043 is about 555.2781583248.

The spelling of 171211043 in words is "one hundred seventy-one million, two hundred eleven thousand, forty-three".