305013205 has 16 divisors (see below), whose sum is σ = 421081344. Its totient is φ = 207763200.

The previous prime is 305013193. The next prime is 305013211. The reversal of 305013205 is 502310503.

It is not a de Polignac number, because 305013205 - 2⁵ = 305013173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23572 + ... + 34141.

It is an arithmetic number, because the mean of its divisors is an integer number (26317584).

Almost surely, 2^305013205 is an apocalyptic number.

305013205 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

305013205 is a deficient number, since it is larger than the sum of its proper divisors (116068139).

305013205 is a wasteful number, since it uses less digits than its factorization.

305013205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57876.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 305013205 is about 17464.6272505313. The cubic root of 305013205 is about 673.1412640149.

Adding to 305013205 its reverse (502310503), we get a palindrome (807323708).

The spelling of 305013205 in words is "three hundred five million, thirteen thousand, two hundred five".