204432421331 has 4 divisors (see below), whose sum is σ = 211481815200. Its totient is φ = 197383027464.

The previous prime is 204432421321. The next prime is 204432421499. The reversal of 204432421331 is 133124234402.

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 204432421331 - 2¹⁰ = 204432420307 is a prime.

It is a super-3 number, since 3×204432421331³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 7049393839 = 204432421331 / (2 + 0 + 4 + 4 + 3 + 2 + 4 + 2 + 1 + 3 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204432421294 and 204432421303.

It is not an unprimeable number, because it can be changed into a prime (204432421321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3524696891 + ... + 3524696948.

It is an arithmetic number, because the mean of its divisors is an integer number (52870453800).

Almost surely, 2^204432421331 is an apocalyptic number.

204432421331 is a deficient number, since it is larger than the sum of its proper divisors (7049393869).

204432421331 is an equidigital number, since it uses as much as digits as its factorization.

204432421331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7049393868.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 204432421331 its reverse (133124234402), we get a palindrome (337556655733).

The spelling of 204432421331 in words is "two hundred four billion, four hundred thirty-two million, four hundred twenty-one thousand, three hundred thirty-one".