100003109 has 4 divisors (see below), whose sum is σ = 100255404. Its totient is φ = 99750816.

The previous prime is 100003091. The next prime is 100003151. The reversal of 100003109 is 901300001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 901300001 = 7 ⋅128757143.

It can be written as a sum of positive squares in 2 ways, for example, as 75777025 + 24226084 = 8705^2 + 4922^2 .

It is a cyclic number.

It is not a de Polignac number, because 100003109 - 2¹⁶ = 99937573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100003093 and 100003102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100008109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 125552 + ... + 126345.

It is an arithmetic number, because the mean of its divisors is an integer number (25063851).

Almost surely, 2^100003109 is an apocalyptic number.

It is an amenable number.

100003109 is a deficient number, since it is larger than the sum of its proper divisors (252295).

100003109 is an equidigital number, since it uses as much as digits as its factorization.

100003109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252294.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 100003109 is about 10000.1554487918. The cubic root of 100003109 is about 464.1636935447.

The spelling of 100003109 in words is "one hundred million, three thousand, one hundred nine".