204133343431 has 4 divisors (see below), whose sum is σ = 204658108200. Its totient is φ = 203608578664.

The previous prime is 204133343429. The next prime is 204133343437. The reversal of 204133343431 is 134343331402.

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 204133343431 - 2¹ = 204133343429 is a prime.

It is a super-2 number, since 2×204133343431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204133343393 and 204133343402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204133343437) 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, 262381801 + ... + 262382578.

It is an arithmetic number, because the mean of its divisors is an integer number (51164527050).

Almost surely, 2^204133343431 is an apocalyptic number.

204133343431 is a deficient number, since it is larger than the sum of its proper divisors (524764769).

204133343431 is an equidigital number, since it uses as much as digits as its factorization.

204133343431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524764768.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 204133343431 its reverse (134343331402), we get a palindrome (338476674833).

The spelling of 204133343431 in words is "two hundred four billion, one hundred thirty-three million, three hundred forty-three thousand, four hundred thirty-one".