305205400103 has 4 divisors (see below), whose sum is σ = 305210361600. Its totient is φ = 305200438608.

The previous prime is 305205400061. The next prime is 305205400121. The reversal of 305205400103 is 301004502503.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 305205400103 - 2⁸ = 305205399847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305205400153) 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 in 3 ways as a sum of consecutive naturals, for example, 2387303 + ... + 2511896.

It is an arithmetic number, because the mean of its divisors is an integer number (76302590400).

Almost surely, 2^305205400103 is an apocalyptic number.

305205400103 is a deficient number, since it is larger than the sum of its proper divisors (4961497).

305205400103 is an equidigital number, since it uses as much as digits as its factorization.

305205400103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4961496.

The product of its (nonzero) digits is 1800, while the sum is 23.

Adding to 305205400103 its reverse (301004502503), we get a palindrome (606209902606).

The spelling of 305205400103 in words is "three hundred five billion, two hundred five million, four hundred thousand, one hundred three".