12131202031331 has 4 divisors (see below), whose sum is σ = 12132293076000. Its totient is φ = 12130110986664.

The previous prime is 12131202031321. The next prime is 12131202031471. The reversal of 12131202031331 is 13313020213121.

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 12131202031331 - 2⁴² = 7733155520227 is a prime.

It is a super-2 number, since 2×12131202031331² (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 = 12131202031297 and 12131202031306.

It is not an unprimeable number, because it can be changed into a prime (12131202031321) 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, 545505656 + ... + 545527893.

It is an arithmetic number, because the mean of its divisors is an integer number (3033073269000).

Almost surely, 2^{12131202031331} is an apocalyptic number.

12131202031331 is a deficient number, since it is larger than the sum of its proper divisors (1091044669).

12131202031331 is a wasteful number, since it uses less digits than its factorization.

12131202031331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091044668.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 12131202031331 its reverse (13313020213121), we get a palindrome (25444222244452).

The spelling of 12131202031331 in words is "twelve trillion, one hundred thirty-one billion, two hundred two million, thirty-one thousand, three hundred thirty-one".