12031320232 has 8 divisors (see below), whose sum is σ = 22558725450. Its totient is φ = 6015660112.

The previous prime is 12031320221. The next prime is 12031320251. The reversal of 12031320232 is 23202313021.

It can be written as a sum of positive squares in only one way, i.e., 9985205476 + 2046114756 = 99926^2 + 45234^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 751957507 + ... + 751957522.

Almost surely, 2^12031320232 is an apocalyptic number.

It is an amenable number.

12031320232 is a deficient number, since it is larger than the sum of its proper divisors (10527405218).

12031320232 is a wasteful number, since it uses less digits than its factorization.

12031320232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1503915035 (or 1503915031 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 12031320232 its reverse (23202313021), we get a palindrome (35233633253).

The spelling of 12031320232 in words is "twelve billion, thirty-one million, three hundred twenty thousand, two hundred thirty-two".