210213173 has 2 divisors, whose sum is σ = 210213174. Its totient is φ = 210213172.

The previous prime is 210213151. The next prime is 210213221. The reversal of 210213173 is 371312012.

210213173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191490244 + 18722929 = 13838^2 + 4327^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210213173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210213673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105106586 + 105106587.

It is an arithmetic number, because the mean of its divisors is an integer number (105106587).

Almost surely, 2^210213173 is an apocalyptic number.

It is an amenable number.

210213173 is a deficient number, since it is larger than the sum of its proper divisors (1).

210213173 is an equidigital number, since it uses as much as digits as its factorization.

210213173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 210213173 is about 14498.7300478352. The cubic root of 210213173 is about 594.5932516530.

Adding to 210213173 its reverse (371312012), we get a palindrome (581525185).

The spelling of 210213173 in words is "two hundred ten million, two hundred thirteen thousand, one hundred seventy-three".