12131302031231 has 8 divisors (see below), whose sum is σ = 12219940070784. Its totient is φ = 12042665272960.

The previous prime is 12131302031221. The next prime is 12131302031237. The reversal of 12131302031231 is 13213020313121.

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 12131302031231 - 2¹⁸ = 12131301769087 is a prime.

It is a super-2 number, since 2×12131302031231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12131302031197 and 12131302031206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131302031237) 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, 27438386 + ... + 27877008.

It is an arithmetic number, because the mean of its divisors is an integer number (1527492508848).

Almost surely, 2^{12131302031231} is an apocalyptic number.

12131302031231 is a deficient number, since it is larger than the sum of its proper divisors (88638039553).

12131302031231 is a wasteful number, since it uses less digits than its factorization.

12131302031231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640641.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 12131302031231 its reverse (13213020313121), we get a palindrome (25344322344352).

The spelling of 12131302031231 in words is "twelve trillion, one hundred thirty-one billion, three hundred two million, thirty-one thousand, two hundred thirty-one".