12031322211131 has 4 divisors (see below), whose sum is σ = 12419429379264. Its totient is φ = 11643215043000.

The previous prime is 12031322211109. The next prime is 12031322211157. The reversal of 12031322211131 is 13111222313021.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12031322211131 - 2²⁶ = 12031255102267 is a prime.

It is a super-2 number, since 2×12031322211131² (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 = 12031322211097 and 12031322211106.

It is not an unprimeable number, because it can be changed into a prime (12031322211331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194053584020 + ... + 194053584081.

It is an arithmetic number, because the mean of its divisors is an integer number (3104857344816).

Almost surely, 2^{12031322211131} is an apocalyptic number.

12031322211131 is a deficient number, since it is larger than the sum of its proper divisors (388107168133).

12031322211131 is an equidigital number, since it uses as much as digits as its factorization.

12031322211131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388107168132.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12031322211131 its reverse (13111222313021), we get a palindrome (25142544524152).

The spelling of 12031322211131 in words is "twelve trillion, thirty-one billion, three hundred twenty-two million, two hundred eleven thousand, one hundred thirty-one".