205313434 has 16 divisors (see below), whose sum is σ = 323122176. Its totient is φ = 97714800.

The previous prime is 205313413. The next prime is 205313447. The reversal of 205313434 is 434313502.

It is a junction number, because it is equal to n+sod(n) for n = 205313399 and 205313408.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23362 + ... + 30925.

It is an arithmetic number, because the mean of its divisors is an integer number (20195136).

Almost surely, 2^205313434 is an apocalyptic number.

205313434 is a deficient number, since it is larger than the sum of its proper divisors (117808742).

205313434 is a wasteful number, since it uses less digits than its factorization.

205313434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54381.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 205313434 is about 14328.7624727329. The cubic root of 205313434 is about 589.9372086772.

Adding to 205313434 its reverse (434313502), we get a palindrome (639626936).

The spelling of 205313434 in words is "two hundred five million, three hundred thirteen thousand, four hundred thirty-four".