20311230009 has 8 divisors (see below), whose sum is σ = 30950445760. Its totient is φ = 11606417136.

The previous prime is 20311229947. The next prime is 20311230019. The reversal of 20311230009 is 90003211302.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20311230009 - 2⁸ = 20311229753 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 967201429 = 20311230009 / (2 + 0 + 3 + 1 + 1 + 2 + 3 + 0 + 0 + 0 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20311230019) 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 7 ways as a sum of consecutive naturals, for example, 483600694 + ... + 483600735.

It is an arithmetic number, because the mean of its divisors is an integer number (3868805720).

Almost surely, 2^20311230009 is an apocalyptic number.

It is an amenable number.

20311230009 is a deficient number, since it is larger than the sum of its proper divisors (10639215751).

20311230009 is an equidigital number, since it uses as much as digits as its factorization.

20311230009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967201439.

The product of its (nonzero) digits is 324, while the sum is 21.

The spelling of 20311230009 in words is "twenty billion, three hundred eleven million, two hundred thirty thousand, nine".