20330031109 has 4 divisors (see below), whose sum is σ = 20376983116. Its totient is φ = 20283079104.

The previous prime is 20330031101. The next prime is 20330031143. The reversal of 20330031109 is 90113003302.

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 10003000225 + 10327030884 = 100015^2 + 101622^2 .

It is a cyclic number.

It is not a de Polignac number, because 20330031109 - 2³ = 20330031101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20330031109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330031101) 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, 23475354 + ... + 23476219.

It is an arithmetic number, because the mean of its divisors is an integer number (5094245779).

Almost surely, 2^20330031109 is an apocalyptic number.

It is an amenable number.

20330031109 is a deficient number, since it is larger than the sum of its proper divisors (46952007).

20330031109 is an equidigital number, since it uses as much as digits as its factorization.

20330031109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46952006.

The product of its (nonzero) digits is 486, while the sum is 22.

The spelling of 20330031109 in words is "twenty billion, three hundred thirty million, thirty-one thousand, one hundred nine".