12130431232 has 18 divisors (see below), whose sum is σ = 24213478478. Its totient is φ = 6065215488.

The previous prime is 12130431191. The next prime is 12130431239. The reversal of 12130431232 is 23213403121.

It can be written as a sum of positive squares in only one way, i.e., 11695124736 + 435306496 = 108144^2 + 20864^2 .

It is not an unprimeable number, because it can be changed into a prime (12130431239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23691993 + ... + 23692504.

Almost surely, 2^12130431232 is an apocalyptic number.

It is an amenable number.

12130431232 is a deficient number, since it is larger than the sum of its proper divisors (12083047246).

12130431232 is an frugal number, since it uses more digits than its factorization.

12130431232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47384513 (or 47384499 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 12130431232 its reverse (23213403121), we get a palindrome (35343834353).

The spelling of 12130431232 in words is "twelve billion, one hundred thirty million, four hundred thirty-one thousand, two hundred thirty-two".