12031322232 has 16 divisors (see below), whose sum is σ = 30078305640.
Its totient is φ = 4010440736.
The previous prime is 12031322231. The next prime is 12031322309. The reversal of 12031322232 is 23222313021.
It is a happy number.
It is a junction number, because it is equal to n+sod(n) for n = 12031322199 and 12031322208.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12031322231) 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, 250652523 + ... + 250652570.
Almost surely, 212031322232 is an apocalyptic number.
12031322232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.
It is an amenable number.
12031322232 is an abundant number, since it is smaller than the sum of its proper divisors (18046983408).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12031322232 is a wasteful number, since it uses less digits than its factorization.
12031322232 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 501305102 (or 501305098 counting only the distinct ones).
The product of its (nonzero) digits is 864, while the sum is 21.
Adding to 12031322232 its reverse (23222313021), we get a palindrome (35253635253).
The spelling of 12031322232 in words is "twelve billion, thirty-one million, three hundred twenty-two thousand, two hundred thirty-two".