205233011 has 4 divisors (see below), whose sum is σ = 205267800. Its totient is φ = 205198224.

The previous prime is 205232981. The next prime is 205233019. The reversal of 205233011 is 110332502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205233011 - 2¹⁰ = 205231987 is a prime.

It is a super-2 number, since 2×205233011² = 84241177608252242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205233019) 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 3 ways as a sum of consecutive naturals, for example, 6101 + ... + 21158.

It is an arithmetic number, because the mean of its divisors is an integer number (51316950).

Almost surely, 2^205233011 is an apocalyptic number.

205233011 is a deficient number, since it is larger than the sum of its proper divisors (34789).

205233011 is an equidigital number, since it uses as much as digits as its factorization.

205233011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34788.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 205233011 is about 14325.9558494364. The cubic root of 205233011 is about 589.8601708277.

Adding to 205233011 its reverse (110332502), we get a palindrome (315565513).

The spelling of 205233011 in words is "two hundred five million, two hundred thirty-three thousand, eleven".