20323231003 has 4 divisors (see below), whose sum is σ = 21392874760. Its totient is φ = 19253587248.

The previous prime is 20323230947. The next prime is 20323231013. The reversal of 20323231003 is 30013232302.

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 20323231003 - 2¹⁷ = 20323099931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1069643737 = 20323231003 / (2 + 0 + 3 + 2 + 3 + 2 + 3 + 1 + 0 + 0 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20323231013) 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, 534821850 + ... + 534821887.

It is an arithmetic number, because the mean of its divisors is an integer number (5348218690).

Almost surely, 2^20323231003 is an apocalyptic number.

20323231003 is a deficient number, since it is larger than the sum of its proper divisors (1069643757).

20323231003 is a wasteful number, since it uses less digits than its factorization.

20323231003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069643756.

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

Adding to 20323231003 its reverse (30013232302), we get a palindrome (50336463305).

The spelling of 20323231003 in words is "twenty billion, three hundred twenty-three million, two hundred thirty-one thousand, three".