20012320003 has 8 divisors (see below), whose sum is σ = 21564090128. Its totient is φ = 18462315744.

The previous prime is 20012319989. The next prime is 20012320037. The reversal of 20012320003 is 30002321002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20012320003 - 2⁹ = 20012319491 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012320063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 417876 + ... + 463297.

It is an arithmetic number, because the mean of its divisors is an integer number (2695511266).

Almost surely, 2^20012320003 is an apocalyptic number.

20012320003 is a deficient number, since it is larger than the sum of its proper divisors (1551770125).

20012320003 is a wasteful number, since it uses less digits than its factorization.

20012320003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882933.

The product of its (nonzero) digits is 72, while the sum is 13.

Adding to 20012320003 its reverse (30002321002), we get a palindrome (50014641005).

Subtracting 20012320003 from its reverse (30002321002), we obtain a palindrome (9990000999).

The spelling of 20012320003 in words is "twenty billion, twelve million, three hundred twenty thousand, three".