204220020031 has 2 divisors, whose sum is σ = 204220020032. Its totient is φ = 204220020030.

The previous prime is 204220019959. The next prime is 204220020077. The reversal of 204220020031 is 130020022402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204220020031 - 2²³ = 204211631423 is a prime.

It is a super-2 number, since 2×204220020031² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204220019987 and 204220020014.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204220020731) 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, 102110010015 + 102110010016.

It is an arithmetic number, because the mean of its divisors is an integer number (102110010016).

Almost surely, 2^204220020031 is an apocalyptic number.

204220020031 is a deficient number, since it is larger than the sum of its proper divisors (1).

204220020031 is an equidigital number, since it uses as much as digits as its factorization.

204220020031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 204220020031 its reverse (130020022402), we get a palindrome (334240042433).

The spelling of 204220020031 in words is "two hundred four billion, two hundred twenty million, twenty thousand, thirty-one".