12031231653231 has 8 divisors (see below), whose sum is σ = 18333305376384. Its totient is φ = 6874989516120.

The previous prime is 12031231653227. The next prime is 12031231653241. The reversal of 12031231653231 is 13235613213021.

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

It is not a de Polignac number, because 12031231653231 - 2² = 12031231653227 is a prime.

It is a super-2 number, since 2×12031231653231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12031231653192 and 12031231653201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031231653211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 286457896485 + ... + 286457896526.

It is an arithmetic number, because the mean of its divisors is an integer number (2291663172048).

Almost surely, 2^{12031231653231} is an apocalyptic number.

12031231653231 is a deficient number, since it is larger than the sum of its proper divisors (6302073723153).

12031231653231 is an equidigital number, since it uses as much as digits as its factorization.

12031231653231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572915793021.

The product of its (nonzero) digits is 19440, while the sum is 33.

Adding to 12031231653231 its reverse (13235613213021), we get a palindrome (25266844866252).

The spelling of 12031231653231 in words is "twelve trillion, thirty-one billion, two hundred thirty-one million, six hundred fifty-three thousand, two hundred thirty-one".