205043135313 has 8 divisors (see below), whose sum is σ = 274363769376. Its totient is φ = 136208962400.

The previous prime is 205043135299. The next prime is 205043135371. The reversal of 205043135313 is 313531340502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 205043135313 - 2¹² = 205043131217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (205043135393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121614303 + ... + 121615988.

It is an arithmetic number, because the mean of its divisors is an integer number (34295471172).

Almost surely, 2^205043135313 is an apocalyptic number.

It is an amenable number.

205043135313 is a deficient number, since it is larger than the sum of its proper divisors (69320634063).

205043135313 is a wasteful number, since it uses less digits than its factorization.

205043135313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243230575.

The product of its (nonzero) digits is 16200, while the sum is 30.

Adding to 205043135313 its reverse (313531340502), we get a palindrome (518574475815).

The spelling of 205043135313 in words is "two hundred five billion, forty-three million, one hundred thirty-five thousand, three hundred thirteen".