204311240543 has 2 divisors, whose sum is σ = 204311240544. Its totient is φ = 204311240542.

The previous prime is 204311240527. The next prime is 204311240561. The reversal of 204311240543 is 345042113402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204311240543 - 2⁴ = 204311240527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204311240593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102155620271 + 102155620272.

It is an arithmetic number, because the mean of its divisors is an integer number (102155620272).

Almost surely, 2^204311240543 is an apocalyptic number.

204311240543 is a deficient number, since it is larger than the sum of its proper divisors (1).

204311240543 is an equidigital number, since it uses as much as digits as its factorization.

204311240543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 204311240543 its reverse (345042113402), we get a palindrome (549353353945).

The spelling of 204311240543 in words is "two hundred four billion, three hundred eleven million, two hundred forty thousand, five hundred forty-three".