171006213 has 48 divisors (see below), whose sum is σ = 291576320. Its totient is φ = 87070464.

The previous prime is 171006211. The next prime is 171006217. The reversal of 171006213 is 312600171.

It is not a de Polignac number, because 171006213 - 2¹ = 171006211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 171006213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171006211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 114570 + ... + 116052.

Almost surely, 2^171006213 is an apocalyptic number.

It is an amenable number.

171006213 is a deficient number, since it is larger than the sum of its proper divisors (120570107).

171006213 is a wasteful number, since it uses less digits than its factorization.

171006213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546 (or 1529 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 21.

The square root of 171006213 is about 13076.9343884566. The cubic root of 171006213 is about 555.0566324809.

Adding to 171006213 its reverse (312600171), we get a palindrome (483606384).

The spelling of 171006213 in words is "one hundred seventy-one million, six thousand, two hundred thirteen".