103305909 has 32 divisors (see below), whose sum is σ = 162100224. Its totient is φ = 57294720.

The previous prime is 103305899. The next prime is 103305913. The reversal of 103305909 is 909503301.

It is not a de Polignac number, because 103305909 - 2¹¹ = 103303861 is a prime.

It is a super-2 number, since 2×103305909² = 21344221668632562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103305929) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 210154 + ... + 210644.

It is an arithmetic number, because the mean of its divisors is an integer number (5065632).

Almost surely, 2^103305909 is an apocalyptic number.

It is an amenable number.

103305909 is a deficient number, since it is larger than the sum of its proper divisors (58794315).

103305909 is a wasteful number, since it uses less digits than its factorization.

103305909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777.

The product of its (nonzero) digits is 3645, while the sum is 30.

The square root of 103305909 is about 10163.9514461650. The cubic root of 103305909 is about 469.2184218479.

The spelling of 103305909 in words is "one hundred three million, three hundred five thousand, nine hundred nine".