12032131231 has 4 divisors (see below), whose sum is σ = 12032367952. Its totient is φ = 12031894512.

The previous prime is 12032131207. The next prime is 12032131253. The reversal of 12032131231 is 13213123021.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12032131231 is a prime.

It is a super-2 number, since 2×12032131231² (a number of 21 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 = 12032131199 and 12032131208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12035131231) 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, 7515 + ... + 155308.

It is an arithmetic number, because the mean of its divisors is an integer number (3008091988).

Almost surely, 2^12032131231 is an apocalyptic number.

12032131231 is a deficient number, since it is larger than the sum of its proper divisors (236721).

12032131231 is an equidigital number, since it uses as much as digits as its factorization.

12032131231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236720.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 12032131231 its reverse (13213123021), we get a palindrome (25245254252).

The spelling of 12032131231 in words is "twelve billion, thirty-two million, one hundred thirty-one thousand, two hundred thirty-one".