12031071930 has 48 divisors (see below), whose sum is σ = 31288813920. Its totient is φ = 3207462624.

The previous prime is 12031071917. The next prime is 12031071937. The reversal of 12031071930 is 3917013021.

It is a junction number, because it is equal to n+sod(n) for n = 12031071894 and 12031071903.

It is not an unprimeable number, because it can be changed into a prime (12031071937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 388561 + ... + 418379.

It is an arithmetic number, because the mean of its divisors is an integer number (651850290).

Almost surely, 2^12031071930 is an apocalyptic number.

12031071930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12031071930 is an abundant number, since it is smaller than the sum of its proper divisors (19257741990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12031071930 is a wasteful number, since it uses less digits than its factorization.

12031071930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34315 (or 34312 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

Adding to 12031071930 its reverse (3917013021), we get a palindrome (15948084951).

The spelling of 12031071930 in words is "twelve billion, thirty-one million, seventy-one thousand, nine hundred thirty".