10203309 has 12 divisors (see below), whose sum is σ = 15213952. Its totient is φ = 6582600.

The previous prime is 10203299. The next prime is 10203317. The reversal of 10203309 is 90330201.

It is not a de Polignac number, because 10203309 - 2⁴ = 10203293 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10203291 and 10203300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10203359) 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 11 ways as a sum of consecutive naturals, for example, 18007 + ... + 18564.

Almost surely, 2^10203309 is an apocalyptic number.

It is an amenable number.

10203309 is a deficient number, since it is larger than the sum of its proper divisors (5010643).

10203309 is a wasteful number, since it uses less digits than its factorization.

10203309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36608 (or 36605 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

The square root of 10203309 is about 3194.2618865710. The cubic root of 10203309 is about 216.8937377471.

The spelling of 10203309 in words is "ten million, two hundred three thousand, three hundred nine".