12232311031 has 4 divisors (see below), whose sum is σ = 12233551464. Its totient is φ = 12231070600.

The previous prime is 12232311011. The next prime is 12232311043. The reversal of 12232311031 is 13011323221.

12232311031 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: 13011323221 = 13 ⋅1000871017.

It is a cyclic number.

It is not a de Polignac number, because 12232311031 - 2³¹ = 10084827383 is a prime.

It is a super-2 number, since 2×12232311031² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12232311011) 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, 605305 + ... + 625186.

It is an arithmetic number, because the mean of its divisors is an integer number (3058387866).

Almost surely, 2^12232311031 is an apocalyptic number.

12232311031 is a deficient number, since it is larger than the sum of its proper divisors (1240433).

12232311031 is an equidigital number, since it uses as much as digits as its factorization.

12232311031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240432.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12232311031 its reverse (13011323221), we get a palindrome (25243634252).

The spelling of 12232311031 in words is "twelve billion, two hundred thirty-two million, three hundred eleven thousand, thirty-one".