2130173 has 2 divisors, whose sum is σ = 2130174. Its totient is φ = 2130172.

The previous prime is 2130169. The next prime is 2130209. The reversal of 2130173 is 3710312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1532644 + 597529 = 1238^2 + 773^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130173 - 2² = 2130169 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2130133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1065086 + 1065087.

It is an arithmetic number, because the mean of its divisors is an integer number (1065087).

2^2130173 is an apocalyptic number.

It is an amenable number.

2130173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2130173 is an equidigital number, since it uses as much as digits as its factorization.

2130173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 2130173 is about 1459.5112195526. The cubic root of 2130173 is about 128.6683184422.

Adding to 2130173 its reverse (3710312), we get a palindrome (5840485).

The spelling of 2130173 in words is "two million, one hundred thirty thousand, one hundred seventy-three".