103204321 has 16 divisors (see below), whose sum is σ = 114948288. Its totient is φ = 91872000.

The previous prime is 103204319. The next prime is 103204337. The reversal of 103204321 is 123402301.

It is a happy number.

It is not a de Polignac number, because 103204321 - 2¹ = 103204319 is a prime.

It is a super-2 number, since 2×103204321² = 21302263746142082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103204295 and 103204304.

It is not an unprimeable number, because it can be changed into a prime (103204351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171421 + ... + 172021.

It is an arithmetic number, because the mean of its divisors is an integer number (7184268).

Almost surely, 2^103204321 is an apocalyptic number.

103204321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

103204321 is a deficient number, since it is larger than the sum of its proper divisors (11743967).

103204321 is a wasteful number, since it uses less digits than its factorization.

103204321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 103204321 is about 10158.9527511452. The cubic root of 103204321 is about 469.0645661947.

Adding to 103204321 its reverse (123402301), we get a palindrome (226606622).

It can be divided in two parts, 10320 and 4321, that added together give a palindrome (14641).

The spelling of 103204321 in words is "one hundred three million, two hundred four thousand, three hundred twenty-one".