12235403231 has 2 divisors, whose sum is σ = 12235403232. Its totient is φ = 12235403230.

The previous prime is 12235403209. The next prime is 12235403321. The reversal of 12235403231 is 13230453221.

It is a happy number.

Together with next prime (12235403321) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12235403231 is a prime.

It is a super-2 number, since 2×12235403231² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12235403231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12235403731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6117701615 + 6117701616.

It is an arithmetic number, because the mean of its divisors is an integer number (6117701616).

Almost surely, 2^12235403231 is an apocalyptic number.

12235403231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12235403231 is an equidigital number, since it uses as much as digits as its factorization.

12235403231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 12235403231 its reverse (13230453221), we get a palindrome (25465856452).

The spelling of 12235403231 in words is "twelve billion, two hundred thirty-five million, four hundred three thousand, two hundred thirty-one".