204221231 has 8 divisors (see below), whose sum is σ = 206027184. Its totient is φ = 202423680.

The previous prime is 204221197. The next prime is 204221261. The reversal of 204221231 is 132122402.

204221231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204221231 is a prime.

It is a super-2 number, since 2×204221231² = 83412622382310722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204221261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52841 + ... + 56573.

It is an arithmetic number, because the mean of its divisors is an integer number (25753398).

Almost surely, 2^204221231 is an apocalyptic number.

204221231 is a deficient number, since it is larger than the sum of its proper divisors (1805953).

204221231 is a wasteful number, since it uses less digits than its factorization.

204221231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4201.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 204221231 is about 14290.5993926077. The cubic root of 204221231 is about 588.8892546429.

Adding to 204221231 its reverse (132122402), we get a palindrome (336343633).

The spelling of 204221231 in words is "two hundred four million, two hundred twenty-one thousand, two hundred thirty-one".