2173923 has 12 divisors (see below), whose sum is σ = 3305640. Its totient is φ = 1372896.

The previous prime is 2173907. The next prime is 2173957. The reversal of 2173923 is 3293712.

2173923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2173923 - 2⁴ = 2173907 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2173903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6186 + ... + 6527.

It is an arithmetic number, because the mean of its divisors is an integer number (275470).

2^2173923 is an apocalyptic number.

2173923 is a deficient number, since it is larger than the sum of its proper divisors (1131717).

2173923 is a wasteful number, since it uses less digits than its factorization.

2173923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12738 (or 12735 counting only the distinct ones).

The product of its digits is 2268, while the sum is 27.

The square root of 2173923 is about 1474.4229379659. The cubic root of 2173923 is about 129.5432293079.

The spelling of 2173923 in words is "two million, one hundred seventy-three thousand, nine hundred twenty-three".