20323112109 has 4 divisors (see below), whose sum is σ = 27097482816. Its totient is φ = 13548741404.

The previous prime is 20323112099. The next prime is 20323112113. The reversal of 20323112109 is 90121132302.

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 cyclic number.

It is not a de Polignac number, because 20323112109 - 2⁷ = 20323111981 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323112119) 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, 3387185349 + ... + 3387185354.

It is an arithmetic number, because the mean of its divisors is an integer number (6774370704).

Almost surely, 2^20323112109 is an apocalyptic number.

It is an amenable number.

20323112109 is a deficient number, since it is larger than the sum of its proper divisors (6774370707).

20323112109 is an equidigital number, since it uses as much as digits as its factorization.

20323112109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774370706.

The product of its (nonzero) digits is 648, while the sum is 24.

The spelling of 20323112109 in words is "twenty billion, three hundred twenty-three million, one hundred twelve thousand, one hundred nine".