12013302231 has 24 divisors (see below), whose sum is σ = 19836570624. Its totient is φ = 6862983120.

The previous prime is 12013302227. The next prime is 12013302233. The reversal of 12013302231 is 13220331021.

12013302231 is a `hidden beast` number, since 120 + 13 + 302 + 231 = 666.

12013302231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12013302231 - 2² = 12013302227 is a prime.

It is a super-2 number, since 2×12013302231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12013302233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 246750 + ... + 291396.

It is an arithmetic number, because the mean of its divisors is an integer number (826523776).

Almost surely, 2^12013302231 is an apocalyptic number.

12013302231 is a deficient number, since it is larger than the sum of its proper divisors (7823268393).

12013302231 is a wasteful number, since it uses less digits than its factorization.

12013302231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48931 (or 48928 counting only the distinct ones).

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

Adding to 12013302231 its reverse (13220331021), we get a palindrome (25233633252).

The spelling of 12013302231 in words is "twelve billion, thirteen million, three hundred two thousand, two hundred thirty-one".