12031131331 has 2 divisors, whose sum is σ = 12031131332. Its totient is φ = 12031131330.

The previous prime is 12031131317. The next prime is 12031131337. The reversal of 12031131331 is 13313113021.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12031131331 - 2¹⁷ = 12031000259 is a prime.

It is a super-2 number, since 2×12031131331² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12031131299 and 12031131308.

It is not a weakly prime, because it can be changed into another prime (12031131337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6015565665 + 6015565666.

It is an arithmetic number, because the mean of its divisors is an integer number (6015565666).

Almost surely, 2^12031131331 is an apocalyptic number.

12031131331 is a deficient number, since it is larger than the sum of its proper divisors (1).

12031131331 is an equidigital number, since it uses as much as digits as its factorization.

12031131331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 12031131331 its reverse (13313113021), we get a palindrome (25344244352).

The spelling of 12031131331 in words is "twelve billion, thirty-one million, one hundred thirty-one thousand, three hundred thirty-one".