12113331231 has 16 divisors (see below), whose sum is σ = 17004429440. Its totient is φ = 7649056800.

The previous prime is 12113331203. The next prime is 12113331257. The reversal of 12113331231 is 13213331121.

It is a happy number.

It is not a de Polignac number, because 12113331231 - 2¹¹ = 12113329183 is a prime.

It is a super-2 number, since 2×12113331231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12113331198 and 12113331207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12113331031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 332256 + ... + 366906.

It is an arithmetic number, because the mean of its divisors is an integer number (1062776840).

Almost surely, 2^12113331231 is an apocalyptic number.

12113331231 is a deficient number, since it is larger than the sum of its proper divisors (4891098209).

12113331231 is a wasteful number, since it uses less digits than its factorization.

12113331231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40806.

The product of its digits is 324, while the sum is 21.

Adding to 12113331231 its reverse (13213331121), we get a palindrome (25326662352).

The spelling of 12113331231 in words is "twelve billion, one hundred thirteen million, three hundred thirty-one thousand, two hundred thirty-one".