3128173 has 2 divisors, whose sum is σ = 3128174. Its totient is φ = 3128172.

The previous prime is 3128171. The next prime is 3128197. The reversal of 3128173 is 3718213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2812329 + 315844 = 1677^2 + 562^2 .

It is a cyclic number.

It is not a de Polignac number, because 3128173 - 2¹ = 3128171 is a prime.

Together with 3128171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3128171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1564086 + 1564087.

It is an arithmetic number, because the mean of its divisors is an integer number (1564087).

Almost surely, 2^3128173 is an apocalyptic number.

It is an amenable number.

3128173 is a deficient number, since it is larger than the sum of its proper divisors (1).

3128173 is an equidigital number, since it uses as much as digits as its factorization.

3128173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 3128173 is about 1768.6641851974. The cubic root of 3128173 is about 146.2503523502.

The spelling of 3128173 in words is "three million, one hundred twenty-eight thousand, one hundred seventy-three".