12032331231 has 4 divisors (see below), whose sum is σ = 16043108312. Its totient is φ = 8021554152.

The previous prime is 12032331221. The next prime is 12032331257. The reversal of 12032331231 is 13213323021.

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

It is not a de Polignac number, because 12032331231 - 2⁶ = 12032331167 is a prime.

It is a super-2 number, since 2×12032331231² (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 = 12032331198 and 12032331207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12032331221) 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, 2005388536 + ... + 2005388541.

It is an arithmetic number, because the mean of its divisors is an integer number (4010777078).

Almost surely, 2^12032331231 is an apocalyptic number.

12032331231 is a deficient number, since it is larger than the sum of its proper divisors (4010777081).

12032331231 is an equidigital number, since it uses as much as digits as its factorization.

12032331231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4010777080.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 12032331231 its reverse (13213323021), we get a palindrome (25245654252).

The spelling of 12032331231 in words is "twelve billion, thirty-two million, three hundred thirty-one thousand, two hundred thirty-one".