213172170 has 32 divisors (see below), whose sum is σ = 525443328. Its totient is φ = 55309248.

The previous prime is 213172139. The next prime is 213172171. The reversal of 213172170 is 71271312.

213172170 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 213172170.

It is not an unprimeable number, because it can be changed into a prime (213172171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94914 + ... + 97133.

It is an arithmetic number, because the mean of its divisors is an integer number (16420104).

Almost surely, 2^213172170 is an apocalyptic number.

213172170 is an abundant number, since it is smaller than the sum of its proper divisors (312271158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

213172170 is a wasteful number, since it uses less digits than its factorization.

213172170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192094.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 213172170 is about 14600.4167748732. The cubic root of 213172170 is about 597.3701286919.

The spelling of 213172170 in words is "two hundred thirteen million, one hundred seventy-two thousand, one hundred seventy".