213184172 has 12 divisors (see below), whose sum is σ = 377567736. Its totient is φ = 105307680.

The previous prime is 213184157. The next prime is 213184187. The reversal of 213184172 is 271481312.

It is an interprime number because it is at equal distance from previous prime (213184157) and next prime (213184187).

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320729 + ... + 321392.

It is an arithmetic number, because the mean of its divisors is an integer number (31463978).

Almost surely, 2^213184172 is an apocalyptic number.

It is an amenable number.

213184172 is a deficient number, since it is larger than the sum of its proper divisors (164383564).

213184172 is a wasteful number, since it uses less digits than its factorization.

213184172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642208 (or 642206 counting only the distinct ones).

The product of its digits is 2688, while the sum is 29.

The square root of 213184172 is about 14600.8277847525. The cubic root of 213184172 is about 597.3813395076.

The spelling of 213184172 in words is "two hundred thirteen million, one hundred eighty-four thousand, one hundred seventy-two".