103205305 has 8 divisors (see below), whose sum is σ = 141538752. Its totient is φ = 70769328.

The previous prime is 103205303. The next prime is 103205309. The reversal of 103205305 is 503502301.

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

It is not a de Polignac number, because 103205305 - 2¹ = 103205303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103205303) 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, 1474327 + ... + 1474396.

It is an arithmetic number, because the mean of its divisors is an integer number (17692344).

Almost surely, 2^103205305 is an apocalyptic number.

It is an amenable number.

103205305 is a deficient number, since it is larger than the sum of its proper divisors (38333447).

103205305 is an equidigital number, since it uses as much as digits as its factorization.

103205305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2948735.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 103205305 is about 10159.0011812186. The cubic root of 103205305 is about 469.0660569529.

Adding to 103205305 its reverse (503502301), we get a palindrome (606707606).

It can be divided in two parts, 10320 and 5305, that added together give a 6-th power (15625 = 5⁶).

The spelling of 103205305 in words is "one hundred three million, two hundred five thousand, three hundred five".