20312204323 has 4 divisors (see below), whose sum is σ = 20354610240. Its totient is φ = 20269798408.

The previous prime is 20312204317. The next prime is 20312204347. The reversal of 20312204323 is 32340221302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20312204323 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20312204294 and 20312204303.

It is not an unprimeable number, because it can be changed into a prime (20312204303) 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 3 ways as a sum of consecutive naturals, for example, 21202240 + ... + 21203197.

It is an arithmetic number, because the mean of its divisors is an integer number (5088652560).

Almost surely, 2^20312204323 is an apocalyptic number.

20312204323 is a deficient number, since it is larger than the sum of its proper divisors (42405917).

20312204323 is an equidigital number, since it uses as much as digits as its factorization.

20312204323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42405916.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 20312204323 its reverse (32340221302), we get a palindrome (52652425625).

The spelling of 20312204323 in words is "twenty billion, three hundred twelve million, two hundred four thousand, three hundred twenty-three".