205135110 has 48 divisors (see below), whose sum is σ = 540674784. Its totient is φ = 53951616.

The previous prime is 205135093. The next prime is 205135129. The reversal of 205135110 is 11531502.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9042 + ... + 22181.

It is an arithmetic number, because the mean of its divisors is an integer number (11264058).

Almost surely, 2^205135110 is an apocalyptic number.

205135110 is an abundant number, since it is smaller than the sum of its proper divisors (335539674).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205135110 is a wasteful number, since it uses less digits than its factorization.

205135110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31309 (or 31306 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 205135110 is about 14322.5385319782. The cubic root of 205135110 is about 589.7663634928.

Adding to 205135110 its reverse (11531502), we get a palindrome (216666612).

The spelling of 205135110 in words is "two hundred five million, one hundred thirty-five thousand, one hundred ten".