20310003223 has 4 divisors (see below), whose sum is σ = 20314051648. Its totient is φ = 20305954800.

The previous prime is 20310003179. The next prime is 20310003247. The reversal of 20310003223 is 32230001302.

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 20310003223 - 2⁹ = 20310002711 is a prime.

It is a super-3 number, since 3×20310003223³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20310003197 and 20310003206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20310003293) 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, 2016678 + ... + 2026723.

It is an arithmetic number, because the mean of its divisors is an integer number (5078512912).

Almost surely, 2^20310003223 is an apocalyptic number.

20310003223 is a deficient number, since it is larger than the sum of its proper divisors (4048425).

20310003223 is an equidigital number, since it uses as much as digits as its factorization.

20310003223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4048424.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 20310003223 its reverse (32230001302), we get a palindrome (52540004525).

The spelling of 20310003223 in words is "twenty billion, three hundred ten million, three thousand, two hundred twenty-three".