12031323130 has 16 divisors (see below), whose sum is σ = 22930286760. Its totient is φ = 4529439232.

The previous prime is 12031323121. The next prime is 12031323133. The reversal of 12031323130 is 3132313021.

It can be written as a sum of positive squares in 4 ways, for example, as 11220953041 + 810370089 = 105929^2 + 28467^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12031323098 and 12031323107.

It is not an unprimeable number, because it can be changed into a prime (12031323133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35386075 + ... + 35386414.

Almost surely, 2^12031323130 is an apocalyptic number.

12031323130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12031323130 is a deficient number, since it is larger than the sum of its proper divisors (10898963630).

12031323130 is a wasteful number, since it uses less digits than its factorization.

12031323130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70772513.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 12031323130 its reverse (3132313021), we get a palindrome (15163636151).

The spelling of 12031323130 in words is "twelve billion, thirty-one million, three hundred twenty-three thousand, one hundred thirty".