205103113 has 8 divisors (see below), whose sum is σ = 217431432. Its totient is φ = 192804096.

The previous prime is 205103071. The next prime is 205103137. The reversal of 205103113 is 311301502.

It can be written as a sum of positive squares in 4 ways, for example, as 37063744 + 168039369 = 6088^2 + 12963^2 .

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 205103113 - 2¹³ = 205094921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205103153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8031 + ... + 21787.

It is an arithmetic number, because the mean of its divisors is an integer number (27178929).

Almost surely, 2^205103113 is an apocalyptic number.

It is an amenable number.

205103113 is a deficient number, since it is larger than the sum of its proper divisors (12328319).

205103113 is a wasteful number, since it uses less digits than its factorization.

205103113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14651.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 205103113 is about 14321.4214727449. The cubic root of 205103113 is about 589.7356979547.

Adding to 205103113 its reverse (311301502), we get a palindrome (516404615).

The spelling of 205103113 in words is "two hundred five million, one hundred three thousand, one hundred thirteen".