12311020223 has 4 divisors (see below), whose sum is σ = 12332887608. Its totient is φ = 12289152840.

The previous prime is 12311020219. The next prime is 12311020279. The reversal of 12311020223 is 32202011321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32202011321 = 35509 ⋅906869.

It is a cyclic number.

It is not a de Polignac number, because 12311020223 - 2² = 12311020219 is a prime.

It is a super-2 number, since 2×12311020223² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311020723) 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, 10932848 + ... + 10933973.

It is an arithmetic number, because the mean of its divisors is an integer number (3083221902).

Almost surely, 2^12311020223 is an apocalyptic number.

12311020223 is a deficient number, since it is larger than the sum of its proper divisors (21867385).

12311020223 is an equidigital number, since it uses as much as digits as its factorization.

12311020223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21867384.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 12311020223 its reverse (32202011321), we get a palindrome (44513031544).

The spelling of 12311020223 in words is "twelve billion, three hundred eleven million, twenty thousand, two hundred twenty-three".