171240133 has 4 divisors (see below), whose sum is σ = 181313100. Its totient is φ = 161167168.

The previous prime is 171240131. The next prime is 171240161. The reversal of 171240133 is 331042171.

171240133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331042171 = 229 ⋅1445599.

It can be written as a sum of positive squares in 2 ways, for example, as 62204769 + 109035364 = 7887^2 + 10442^2 .

It is a cyclic number.

It is not a de Polignac number, because 171240133 - 2¹ = 171240131 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 (171240131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5036458 + ... + 5036491.

It is an arithmetic number, because the mean of its divisors is an integer number (45328275).

Almost surely, 2^171240133 is an apocalyptic number.

It is an amenable number.

171240133 is a deficient number, since it is larger than the sum of its proper divisors (10072967).

171240133 is a wasteful number, since it uses less digits than its factorization.

171240133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10072966.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 171240133 is about 13085.8753241806. The cubic root of 171240133 is about 555.3096051415.

The spelling of 171240133 in words is "one hundred seventy-one million, two hundred forty thousand, one hundred thirty-three".