213173199 has 12 divisors (see below), whose sum is σ = 308256312. Its totient is φ = 141958800.

The previous prime is 213173189. The next prime is 213173201. The reversal of 213173199 is 991371312.

It is a happy number.

213173199 is a `hidden beast` number, since 21 + 317 + 319 + 9 = 666.

It is not a de Polignac number, because 213173199 - 2¹⁶ = 213107663 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213173189) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4117 + ... + 21054.

It is an arithmetic number, because the mean of its divisors is an integer number (25688026).

Almost surely, 2^213173199 is an apocalyptic number.

213173199 is a deficient number, since it is larger than the sum of its proper divisors (95083113).

213173199 is a wasteful number, since it uses less digits than its factorization.

213173199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26118 (or 26115 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 213173199 is about 14600.4520135508. The cubic root of 213173199 is about 597.3710898756.

The spelling of 213173199 in words is "two hundred thirteen million, one hundred seventy-three thousand, one hundred ninety-nine".