12031331232231 has 32 divisors (see below), whose sum is σ = 17871106176000. Its totient is φ = 7999786580544.

The previous prime is 12031331232227. The next prime is 12031331232247. The reversal of 12031331232231 is 13223213313021.

12031331232231 is a `hidden beast` number, since 1 + 2 + 0 + 3 + 1 + 331 + 2 + 322 + 3 + 1 = 666.

It is not a de Polignac number, because 12031331232231 - 2² = 12031331232227 is a prime.

It is a super-2 number, since 2×12031331232231² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 12031331232195 and 12031331232204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031331232211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46854850 + ... + 47110928.

It is an arithmetic number, because the mean of its divisors is an integer number (558472068000).

Almost surely, 2^{12031331232231} is an apocalyptic number.

12031331232231 is a deficient number, since it is larger than the sum of its proper divisors (5839774943769).

12031331232231 is a wasteful number, since it uses less digits than its factorization.

12031331232231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260660 (or 260654 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

Adding to 12031331232231 its reverse (13223213313021), we get a palindrome (25254544545252).

The spelling of 12031331232231 in words is "twelve trillion, thirty-one billion, three hundred thirty-one million, two hundred thirty-two thousand, two hundred thirty-one".