205044231 has 8 divisors (see below), whose sum is σ = 312448384. Its totient is φ = 117168120.

The previous prime is 205044197. The next prime is 205044233. The reversal of 205044231 is 132440502.

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

It is not a de Polignac number, because 205044231 - 2²² = 200849927 is a prime.

It is a super-2 number, since 2×205044231² = 84086273332762722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 9764011 = 205044231 / (2 + 0 + 5 + 0 + 4 + 4 + 2 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 205044198 and 205044207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205044233) 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, 4881985 + ... + 4882026.

It is an arithmetic number, because the mean of its divisors is an integer number (39056048).

Almost surely, 2^205044231 is an apocalyptic number.

205044231 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

205044231 is a deficient number, since it is larger than the sum of its proper divisors (107404153).

205044231 is an equidigital number, since it uses as much as digits as its factorization.

205044231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9764021.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 205044231 is about 14319.3655934891. The cubic root of 205044231 is about 589.6792578218.

Adding to 205044231 its reverse (132440502), we get a palindrome (337484733).

The spelling of 205044231 in words is "two hundred five million, forty-four thousand, two hundred thirty-one".