12331312231 has 8 divisors (see below), whose sum is σ = 14177318400. Its totient is φ = 10506403608.

The previous prime is 12331312223. The next prime is 12331312237. The reversal of 12331312231 is 13221313321.

12331312231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12331312231 - 2³ = 12331312223 is a prime.

It is a super-2 number, since 2×12331312231² (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 (12331312237) 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 7 ways as a sum of consecutive naturals, for example, 5273131 + ... + 5275468.

It is an arithmetic number, because the mean of its divisors is an integer number (1772164800).

Almost surely, 2^12331312231 is an apocalyptic number.

12331312231 is a deficient number, since it is larger than the sum of its proper divisors (1846006169).

12331312231 is a wasteful number, since it uses less digits than its factorization.

12331312231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10548773.

The product of its digits is 648, while the sum is 22.

Adding to 12331312231 its reverse (13221313321), we get a palindrome (25552625552).

The spelling of 12331312231 in words is "twelve billion, three hundred thirty-one million, three hundred twelve thousand, two hundred thirty-one".