12131231131333 has 4 divisors (see below), whose sum is σ = 12131268198700. Its totient is φ = 12131194063968.

The previous prime is 12131231131319. The next prime is 12131231131363. The reversal of 12131231131333 is 33313113213121.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2581141067649 + 9550090063684 = 1606593^2 + 3090322^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12131231131333 is a prime.

It is a super-3 number, since 3×12131231131333³ (a number of 40 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131231131363) 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, 18038358 + ... + 18698791.

It is an arithmetic number, because the mean of its divisors is an integer number (3032817049675).

Almost surely, 2^{12131231131333} is an apocalyptic number.

It is an amenable number.

12131231131333 is a deficient number, since it is larger than the sum of its proper divisors (37067367).

12131231131333 is an equidigital number, since it uses as much as digits as its factorization.

12131231131333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37067366.

The product of its digits is 2916, while the sum is 28.

Adding to 12131231131333 its reverse (33313113213121), we get a palindrome (45444344344454).

The spelling of 12131231131333 in words is "twelve trillion, one hundred thirty-one billion, two hundred thirty-one million, one hundred thirty-one thousand, three hundred thirty-three".