2180423 has 16 divisors (see below), whose sum is σ = 2695680. Its totient is φ = 1722336.

The previous prime is 2180417. The next prime is 2180467. The reversal of 2180423 is 3240812.

It is not a de Polignac number, because 2180423 - 2¹⁰ = 2179399 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2180395 and 2180404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4436 + ... + 4902.

It is an arithmetic number, because the mean of its divisors is an integer number (168480).

2^2180423 is an apocalyptic number.

2180423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2180423 is a deficient number, since it is larger than the sum of its proper divisors (515257).

2180423 is a wasteful number, since it uses less digits than its factorization.

2180423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 2180423 is about 1476.6255449504. The cubic root of 2180423 is about 129.6722116685.

The spelling of 2180423 in words is "two million, one hundred eighty thousand, four hundred twenty-three".