212738171 has 16 divisors (see below), whose sum is σ = 225060000. Its totient is φ = 200793600.

The previous prime is 212738161. The next prime is 212738173. The reversal of 212738171 is 171837212.

212738171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 212738171 - 2⁶ = 212738107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212738173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426080 + ... + 426578.

It is an arithmetic number, because the mean of its divisors is an integer number (14066250).

Almost surely, 2^212738171 is an apocalyptic number.

212738171 is a deficient number, since it is larger than the sum of its proper divisors (12321829).

212738171 is a wasteful number, since it uses less digits than its factorization.

212738171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830.

The product of its digits is 4704, while the sum is 32.

The square root of 212738171 is about 14585.5466472807. The cubic root of 212738171 is about 596.9644563197.

The spelling of 212738171 in words is "two hundred twelve million, seven hundred thirty-eight thousand, one hundred seventy-one".