12131321133031 has 4 divisors (see below), whose sum is σ = 12769811719000. Its totient is φ = 11492830547064.

The previous prime is 12131321133017. The next prime is 12131321133037. The reversal of 12131321133031 is 13033112313121.

12131321133031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12131321133031 - 2⁹ = 12131321132519 is a prime.

It is a super-3 number, since 3×12131321133031³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12131321132987 and 12131321133005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12131321133037) 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, 319245292956 + ... + 319245292993.

It is an arithmetic number, because the mean of its divisors is an integer number (3192452929750).

Almost surely, 2^{12131321133031} is an apocalyptic number.

12131321133031 is a deficient number, since it is larger than the sum of its proper divisors (638490585969).

12131321133031 is an equidigital number, since it uses as much as digits as its factorization.

12131321133031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638490585968.

The product of its (nonzero) digits is 972, while the sum is 25.

Adding to 12131321133031 its reverse (13033112313121), we get a palindrome (25164433446152).

The spelling of 12131321133031 in words is "twelve trillion, one hundred thirty-one billion, three hundred twenty-one million, one hundred thirty-three thousand, thirty-one".