2130003173 has 4 divisors (see below), whose sum is σ = 2131376268. Its totient is φ = 2128630080.

The previous prime is 2130003157. The next prime is 2130003181. The reversal of 2130003173 is 3713000312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 959884324 + 1170118849 = 30982^2 + 34207^2 .

It is a cyclic number.

It is not a de Polignac number, because 2130003173 - 2⁴ = 2130003157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2130083173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 684218 + ... + 687323.

It is an arithmetic number, because the mean of its divisors is an integer number (532844067).

Almost surely, 2^2130003173 is an apocalyptic number.

It is an amenable number.

2130003173 is a deficient number, since it is larger than the sum of its proper divisors (1373095).

2130003173 is a wasteful number, since it uses less digits than its factorization.

2130003173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373094.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 2130003173 is about 46151.9574124435. The cubic root of 2130003173 is about 1286.6489901178.

Adding to 2130003173 its reverse (3713000312), we get a palindrome (5843003485).

The spelling of 2130003173 in words is "two billion, one hundred thirty million, three thousand, one hundred seventy-three".