12031320100 has 36 divisors (see below), whose sum is σ = 26950163968. Its totient is φ = 4657284000.

The previous prime is 12031320073. The next prime is 12031320107. The reversal of 12031320100 is 102313021.

It is not an unprimeable number, because it can be changed into a prime (12031320107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1937436 + ... + 1943635.

Almost surely, 2^12031320100 is an apocalyptic number.

12031320100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12031320100 is an abundant number, since it is smaller than the sum of its proper divisors (14918843868).

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

12031320100 is a wasteful number, since it uses less digits than its factorization.

12031320100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881116 (or 3881109 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 12031320100 its reverse (102313021), we get a palindrome (12133633121).

The spelling of 12031320100 in words is "twelve billion, thirty-one million, three hundred twenty thousand, one hundred".