13203423 has 12 divisors (see below), whose sum is σ = 20075640. Its totient is φ = 8338896.

The previous prime is 13203419. The next prime is 13203431. The reversal of 13203423 is 32430231.

13203423 is a `hidden beast` number, since 1 + 320 + 342 + 3 = 666.

It is not a de Polignac number, because 13203423 - 2² = 13203419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13203396 and 13203405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13203473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38436 + ... + 38777.

It is an arithmetic number, because the mean of its divisors is an integer number (1672970).

Almost surely, 2^13203423 is an apocalyptic number.

13203423 is a deficient number, since it is larger than the sum of its proper divisors (6872217).

13203423 is a wasteful number, since it uses less digits than its factorization.

13203423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77238 (or 77235 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 13203423 is about 3633.6514692524. The cubic root of 13203423 is about 236.3535768222.

Adding to 13203423 its reverse (32430231), we get a palindrome (45633654).

The spelling of 13203423 in words is "thirteen million, two hundred three thousand, four hundred twenty-three".