204242340031 has 2 divisors, whose sum is σ = 204242340032. Its totient is φ = 204242340030.

The previous prime is 204242339989. The next prime is 204242340037. The reversal of 204242340031 is 130043242402.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204242340031 - 2²⁹ = 203705469119 is a prime.

It is a super-2 number, since 2×204242340031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204242339978 and 204242340005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204242340037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102121170015 + 102121170016.

It is an arithmetic number, because the mean of its divisors is an integer number (102121170016).

Almost surely, 2^204242340031 is an apocalyptic number.

204242340031 is a deficient number, since it is larger than the sum of its proper divisors (1).

204242340031 is an equidigital number, since it uses as much as digits as its factorization.

204242340031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 204242340031 its reverse (130043242402), we get a palindrome (334285582433).

The spelling of 204242340031 in words is "two hundred four billion, two hundred forty-two million, three hundred forty thousand, thirty-one".