20323203440303 has 4 divisors (see below), whose sum is σ = 20323313392200. Its totient is φ = 20323093488408.

The previous prime is 20323203440297. The next prime is 20323203440311. The reversal of 20323203440303 is 30304430232302.

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

It is a cyclic number.

It is not a de Polignac number, because 20323203440303 - 2¹⁶ = 20323203374767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20323203440333) 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, 54698225 + ... + 55068522.

It is an arithmetic number, because the mean of its divisors is an integer number (5080828348050).

Almost surely, 2^{20323203440303} is an apocalyptic number.

20323203440303 is a deficient number, since it is larger than the sum of its proper divisors (109951897).

20323203440303 is a wasteful number, since it uses less digits than its factorization.

20323203440303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109951896.

The product of its (nonzero) digits is 31104, while the sum is 29.

Adding to 20323203440303 its reverse (30304430232302), we get a palindrome (50627633672605).

The spelling of 20323203440303 in words is "twenty trillion, three hundred twenty-three billion, two hundred three million, four hundred forty thousand, three hundred three".