12231433231 has 4 divisors (see below), whose sum is σ = 12263369472. Its totient is φ = 12199496992.

The previous prime is 12231433229. The next prime is 12231433243. The reversal of 12231433231 is 13233413221.

12231433231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13233413221 = 7 ⋅1890487603.

It is a cyclic number.

It is not a de Polignac number, because 12231433231 - 2¹ = 12231433229 is a prime.

It is a super-2 number, since 2×12231433231² (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 = 12231433196 and 12231433205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231433631) 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 3 ways as a sum of consecutive naturals, for example, 15967546 + ... + 15968311.

It is an arithmetic number, because the mean of its divisors is an integer number (3065842368).

Almost surely, 2^12231433231 is an apocalyptic number.

12231433231 is a deficient number, since it is larger than the sum of its proper divisors (31936241).

12231433231 is an equidigital number, since it uses as much as digits as its factorization.

12231433231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31936240.

The product of its digits is 2592, while the sum is 25.

Adding to 12231433231 its reverse (13233413221), we get a palindrome (25464846452).

The spelling of 12231433231 in words is "twelve billion, two hundred thirty-one million, four hundred thirty-three thousand, two hundred thirty-one".