20303311223 has 8 divisors (see below), whose sum is σ = 22164627408. Its totient is φ = 18484784064.

The previous prime is 20303311177. The next prime is 20303311229. The reversal of 20303311223 is 32211330302.

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 20303311223 - 2¹² = 20303307127 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20303311195 and 20303311204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20303311229) 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, 10696265 + ... + 10698162.

It is an arithmetic number, because the mean of its divisors is an integer number (2770578426).

Almost surely, 2^20303311223 is an apocalyptic number.

20303311223 is a deficient number, since it is larger than the sum of its proper divisors (1861316185).

20303311223 is a wasteful number, since it uses less digits than its factorization.

20303311223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21394513.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20303311223 its reverse (32211330302), we get a palindrome (52514641525).

The spelling of 20303311223 in words is "twenty billion, three hundred three million, three hundred eleven thousand, two hundred twenty-three".