205303030205 has 32 divisors (see below), whose sum is σ = 304518299904. Its totient is φ = 129392257536.

The previous prime is 205303030201. The next prime is 205303030223. The reversal of 205303030205 is 502030303502.

It is a cyclic number.

It is not a de Polignac number, because 205303030205 - 2² = 205303030201 is a prime.

It is a super-2 number, since 2×205303030205² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205303030201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 862259 + ... + 1074288.

It is an arithmetic number, because the mean of its divisors is an integer number (9516196872).

Almost surely, 2^205303030205 is an apocalyptic number.

It is an amenable number.

205303030205 is a deficient number, since it is larger than the sum of its proper divisors (99215269699).

205303030205 is a wasteful number, since it uses less digits than its factorization.

205303030205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1936805.

The product of its (nonzero) digits is 2700, while the sum is 23.

Adding to 205303030205 its reverse (502030303502), we get a palindrome (707333333707).

The spelling of 205303030205 in words is "two hundred five billion, three hundred three million, thirty thousand, two hundred five".