205103223319 has 2 divisors, whose sum is σ = 205103223320. Its totient is φ = 205103223318.

The previous prime is 205103223317. The next prime is 205103223323. The reversal of 205103223319 is 913322301502.

205103223319 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205103223319 - 2¹ = 205103223317 is a prime.

It is a super-2 number, since 2×205103223319² (a number of 23 digits) contains 22 as substring.

Together with 205103223317, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205103223317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102551611659 + 102551611660.

It is an arithmetic number, because the mean of its divisors is an integer number (102551611660).

Almost surely, 2^205103223319 is an apocalyptic number.

205103223319 is a deficient number, since it is larger than the sum of its proper divisors (1).

205103223319 is an equidigital number, since it uses as much as digits as its factorization.

205103223319 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 31.

The spelling of 205103223319 in words is "two hundred five billion, one hundred three million, two hundred twenty-three thousand, three hundred nineteen".