10100309 has 4 divisors (see below), whose sum is σ = 10346700. Its totient is φ = 9853920.

The previous prime is 10100291. The next prime is 10100333. The reversal of 10100309 is 90300101.

10100309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 521284 + 9579025 = 722^2 + 3095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10100309 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10100293 and 10100302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10100009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123134 + ... + 123215.

It is an arithmetic number, because the mean of its divisors is an integer number (2586675).

Almost surely, 2^10100309 is an apocalyptic number.

It is an amenable number.

10100309 is a deficient number, since it is larger than the sum of its proper divisors (246391).

10100309 is an equidigital number, since it uses as much as digits as its factorization.

10100309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246390.

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

The square root of 10100309 is about 3178.0983307632. The cubic root of 10100309 is about 216.1614376682.

The spelling of 10100309 in words is "ten million, one hundred thousand, three hundred nine".