12031310232500 has 60 divisors (see below), whose sum is σ = 28333920771156. Its totient is φ = 4442329920000.

The previous prime is 12031310232463. The next prime is 12031310232509. The reversal of 12031310232500 is 523201313021.

It can be written as a sum of positive squares in 10 ways, for example, as 12018854779684 + 12455452816 = 3466822^2 + 111604^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12031310232509) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 185064581 + ... + 185129580.

Almost surely, 2^{12031310232500} is an apocalyptic number.

12031310232500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12031310232500 is an abundant number, since it is smaller than the sum of its proper divisors (16302610538656).

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

12031310232500 is a wasteful number, since it uses less digits than its factorization.

12031310232500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370194198 (or 370194181 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 12031310232500 its reverse (523201313021), we get a palindrome (12554511545521).

The spelling of 12031310232500 in words is "twelve trillion, thirty-one billion, three hundred ten million, two hundred thirty-two thousand, five hundred".