10203205 has 4 divisors (see below), whose sum is σ = 12243852. Its totient is φ = 8162560.

The previous prime is 10203203. The next prime is 10203211. The reversal of 10203205 is 50230201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6937956 + 3265249 = 2634^2 + 1807^2 .

It is not a de Polignac number, because 10203205 - 2¹ = 10203203 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1020316 + ... + 1020325.

It is an arithmetic number, because the mean of its divisors is an integer number (3060963).

Almost surely, 2^10203205 is an apocalyptic number.

It is an amenable number.

10203205 is a deficient number, since it is larger than the sum of its proper divisors (2040647).

10203205 is an equidigital number, since it uses as much as digits as its factorization.

10203205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040646.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 10203205 is about 3194.2456073383. The cubic root of 10203205 is about 216.8930008285.

Adding to 10203205 its reverse (50230201), we get a palindrome (60433406).

It can be divided in two parts, 1020 and 3205, that added together give a square (4225 = 65²).

The spelling of 10203205 in words is "ten million, two hundred three thousand, two hundred five".