20003031323 has 4 divisors (see below), whose sum is σ = 21821488728. Its totient is φ = 18184573920.

The previous prime is 20003031319. The next prime is 20003031343. The reversal of 20003031323 is 32313030002.

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 20003031323 - 2² = 20003031319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20003031343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 909228686 + ... + 909228707.

It is an arithmetic number, because the mean of its divisors is an integer number (5455372182).

Almost surely, 2^20003031323 is an apocalyptic number.

20003031323 is a deficient number, since it is larger than the sum of its proper divisors (1818457405).

20003031323 is a wasteful number, since it uses less digits than its factorization.

20003031323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1818457404.

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 20003031323 its reverse (32313030002), we get a palindrome (52316061325).

The spelling of 20003031323 in words is "twenty billion, three million, thirty-one thousand, three hundred twenty-three".