203541 has 16 divisors (see below), whose sum is σ = 310464. Its totient is φ = 117504.

The previous prime is 203531. The next prime is 203549. The reversal of 203541 is 145302.

203541 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 203541 - 2¹¹ = 201493 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 203541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203549) 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, 510 + ... + 816.

It is an arithmetic number, because the mean of its divisors is an integer number (19404).

2²⁰³⁵⁴¹ is an apocalyptic number.

It is an amenable number.

203541 is a deficient number, since it is larger than the sum of its proper divisors (106923).

203541 is a wasteful number, since it uses less digits than its factorization.

203541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 203541 is about 451.1551839445. The cubic root of 203541 is about 58.8234692744.

Adding to 203541 its reverse (145302), we get a palindrome (348843).

The spelling of 203541 in words is "two hundred three thousand, five hundred forty-one".