12131333233231 has 2 divisors, whose sum is σ = 12131333233232. Its totient is φ = 12131333233230.

The previous prime is 12131333233211. The next prime is 12131333233249. The reversal of 12131333233231 is 13233233313121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12131333233231 - 2²⁷ = 12131199015503 is a prime.

It is a super-2 number, since 2×12131333233231² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12131333233193 and 12131333233202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12131333233211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6065666616615 + 6065666616616.

It is an arithmetic number, because the mean of its divisors is an integer number (6065666616616).

Almost surely, 2^{12131333233231} is an apocalyptic number.

12131333233231 is a deficient number, since it is larger than the sum of its proper divisors (1).

12131333233231 is an equidigital number, since it uses as much as digits as its factorization.

12131333233231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 31.

Adding to 12131333233231 its reverse (13233233313121), we get a palindrome (25364566546352).

The spelling of 12131333233231 in words is "twelve trillion, one hundred thirty-one billion, three hundred thirty-three million, two hundred thirty-three thousand, two hundred thirty-one".