20003231323 has 4 divisors (see below), whose sum is σ = 20004896448. Its totient is φ = 20001566200.

The previous prime is 20003231299. The next prime is 20003231333. The reversal of 20003231323 is 32313230002.

It is a happy number.

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 20003231323 - 2¹⁷ = 20003100251 is a prime.

It is a super-2 number, since 2×20003231323² (a number of 21 digits) contains 22 as substring.

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 20003231323.

It is not an unprimeable number, because it can be changed into a prime (20003231333) 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, 814411 + ... + 838612.

It is an arithmetic number, because the mean of its divisors is an integer number (5001224112).

Almost surely, 2^20003231323 is an apocalyptic number.

20003231323 is a deficient number, since it is larger than the sum of its proper divisors (1665125).

20003231323 is a wasteful number, since it uses less digits than its factorization.

20003231323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1665124.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 20003231323 its reverse (32313230002), we get a palindrome (52316461325).

It can be divided in two parts, 2000 and 3231323, that added together give a palindrome (3233323).

The spelling of 20003231323 in words is "twenty billion, three million, two hundred thirty-one thousand, three hundred twenty-three".