20323311101 has 4 divisors (see below), whose sum is σ = 20328707100. Its totient is φ = 20317915104.

The previous prime is 20323310999. The next prime is 20323311119. The reversal of 20323311101 is 10111332302.

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 17997564025 + 2325747076 = 134155^2 + 48226^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20323311101 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 20323311101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323311161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2692346 + ... + 2699883.

It is an arithmetic number, because the mean of its divisors is an integer number (5082176775).

Almost surely, 2^20323311101 is an apocalyptic number.

It is an amenable number.

20323311101 is a deficient number, since it is larger than the sum of its proper divisors (5395999).

20323311101 is an equidigital number, since it uses as much as digits as its factorization.

20323311101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5395998.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 20323311101 its reverse (10111332302), we get a palindrome (30434643403).

It can be divided in two parts, 2032 and 3311101, that added together give a palindrome (3313133).

The spelling of 20323311101 in words is "twenty billion, three hundred twenty-three million, three hundred eleven thousand, one hundred one".