100023309 has 16 divisors (see below), whose sum is σ = 150272640. Its totient is φ = 65741760.

The previous prime is 100023299. The next prime is 100023311. The reversal of 100023309 is 903320001.

It is not a de Polignac number, because 100023309 - 2⁴ = 100023293 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 100023291 and 100023300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100023109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24172 + ... + 28005.

It is an arithmetic number, because the mean of its divisors is an integer number (9392040).

Almost surely, 2^100023309 is an apocalyptic number.

It is an amenable number.

100023309 is a deficient number, since it is larger than the sum of its proper divisors (50249331).

100023309 is an equidigital number, since it uses as much as digits as its factorization.

100023309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52257 (or 52251 counting only the distinct ones).

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

The square root of 100023309 is about 10001.1653820942. The cubic root of 100023309 is about 464.1949441577.

The spelling of 100023309 in words is "one hundred million, twenty-three thousand, three hundred nine".