20311000311223 has 8 divisors (see below), whose sum is σ = 20328143572880. Its totient is φ = 20293861150080.

The previous prime is 20311000311197. The next prime is 20311000311229. The reversal of 20311000311223 is 32211300011302.

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 20311000311223 - 2⁴¹ = 18111977055671 is a prime.

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 20311000311223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20311000311229) 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, 8926336 + ... + 10968202.

It is an arithmetic number, because the mean of its divisors is an integer number (2541017946610).

Almost surely, 2^{20311000311223} is an apocalyptic number.

20311000311223 is a deficient number, since it is larger than the sum of its proper divisors (17143261657).

20311000311223 is a wasteful number, since it uses less digits than its factorization.

20311000311223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2050257.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 20311000311223 its reverse (32211300011302), we get a palindrome (52522300322525).

The spelling of 20311000311223 in words is "twenty trillion, three hundred eleven billion, three hundred eleven thousand, two hundred twenty-three".