204242432431 has 2 divisors, whose sum is σ = 204242432432. Its totient is φ = 204242432430.

The previous prime is 204242432423. The next prime is 204242432483. The reversal of 204242432431 is 134234242402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204242432431 - 2³ = 204242432423 is a prime.

It is a super-2 number, since 2×204242432431² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204242432393 and 204242432402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204242432131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102121216215 + 102121216216.

It is an arithmetic number, because the mean of its divisors is an integer number (102121216216).

Almost surely, 2^204242432431 is an apocalyptic number.

204242432431 is a deficient number, since it is larger than the sum of its proper divisors (1).

204242432431 is an equidigital number, since it uses as much as digits as its factorization.

204242432431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 204242432431 its reverse (134234242402), we get a palindrome (338476674833).

The spelling of 204242432431 in words is "two hundred four billion, two hundred forty-two million, four hundred thirty-two thousand, four hundred thirty-one".