12013031223 has 12 divisors (see below), whose sum is σ = 17721351648. Its totient is φ = 7838289600.

The previous prime is 12013031207. The next prime is 12013031267. The reversal of 12013031223 is 32213031021.

It is not a de Polignac number, because 12013031223 - 2⁴ = 12013031207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12013031196 and 12013031205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013031293) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14199378 + ... + 14200223.

It is an arithmetic number, because the mean of its divisors is an integer number (1476779304).

Almost surely, 2^12013031223 is an apocalyptic number.

12013031223 is a deficient number, since it is larger than the sum of its proper divisors (5708320425).

12013031223 is a wasteful number, since it uses less digits than its factorization.

12013031223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28399654 (or 28399651 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12013031223 its reverse (32213031021), we get a palindrome (44226062244).

The spelling of 12013031223 in words is "twelve billion, thirteen million, thirty-one thousand, two hundred twenty-three".