12203543 has 8 divisors (see below), whose sum is σ = 13443456. Its totient is φ = 10985400.

The previous prime is 12203507. The next prime is 12203561. The reversal of 12203543 is 34530221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12203543 - 2⁶ = 12203479 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12206543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4253 + ... + 6518.

It is an arithmetic number, because the mean of its divisors is an integer number (1680432).

Almost surely, 2^12203543 is an apocalyptic number.

12203543 is a deficient number, since it is larger than the sum of its proper divisors (1239913).

12203543 is a wasteful number, since it uses less digits than its factorization.

12203543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10885.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 12203543 is about 3493.3569814721. The cubic root of 12203543 is about 230.2300345046.

Adding to 12203543 its reverse (34530221), we get a palindrome (46733764).

The spelling of 12203543 in words is "twelve million, two hundred three thousand, five hundred forty-three".