103830021 has 24 divisors (see below), whose sum is σ = 154285560. Its totient is φ = 67257216.

The previous prime is 103830019. The next prime is 103830031. The reversal of 103830021 is 120038301.

It can be written as a sum of positive squares in 4 ways, for example, as 8767521 + 95062500 = 2961^2 + 9750^2 .

It is not a de Polignac number, because 103830021 - 2¹ = 103830019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 103829976 and 103830003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103830011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 50995 + ... + 52991.

It is an arithmetic number, because the mean of its divisors is an integer number (6428565).

Almost surely, 2^103830021 is an apocalyptic number.

It is an amenable number.

103830021 is a deficient number, since it is larger than the sum of its proper divisors (50455539).

103830021 is a wasteful number, since it uses less digits than its factorization.

103830021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165 (or 2162 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 103830021 is about 10189.7017130042. The cubic root of 103830021 is about 470.0105942987.

Adding to 103830021 its reverse (120038301), we get a palindrome (223868322).

The spelling of 103830021 in words is "one hundred three million, eight hundred thirty thousand, twenty-one".