205443133 has 24 divisors (see below), whose sum is σ = 245008800. Its totient is φ = 171708768.

The previous prime is 205443083. The next prime is 205443149. The reversal of 205443133 is 331344502.

It is not a de Polignac number, because 205443133 - 2¹⁷ = 205312061 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205443098 and 205443107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205443193) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 517291 + ... + 517687.

It is an arithmetic number, because the mean of its divisors is an integer number (10208700).

Almost surely, 2^205443133 is an apocalyptic number.

It is an amenable number.

205443133 is a deficient number, since it is larger than the sum of its proper divisors (39565667).

205443133 is a wasteful number, since it uses less digits than its factorization.

205443133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649 (or 642 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 205443133 is about 14333.2875851983. The cubic root of 205443133 is about 590.0614060381.

Adding to 205443133 its reverse (331344502), we get a palindrome (536787635).

The spelling of 205443133 in words is "two hundred five million, four hundred forty-three thousand, one hundred thirty-three".