123230009 has 4 divisors (see below), whose sum is σ = 140834304. Its totient is φ = 105625716.

The previous prime is 123229979. The next prime is 123230011. The reversal of 123230009 is 900032321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-123230009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123230039) 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, 8802137 + ... + 8802150.

It is an arithmetic number, because the mean of its divisors is an integer number (35208576).

Almost surely, 2^123230009 is an apocalyptic number.

It is an amenable number.

123230009 is a deficient number, since it is larger than the sum of its proper divisors (17604295).

123230009 is an equidigital number, since it uses as much as digits as its factorization.

123230009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17604294.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 123230009 is about 11100.9012697168. The cubic root of 123230009 is about 497.6287844504.

The spelling of 123230009 in words is "one hundred twenty-three million, two hundred thirty thousand, nine".