12031231099 has 8 divisors (see below), whose sum is σ = 12420783488. Its totient is φ = 11641769280.

The previous prime is 12031231097. The next prime is 12031231123. The reversal of 12031231099 is 99013213021.

12031231099 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12031231099 - 2¹ = 12031231097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12031231099.

It is not an unprimeable number, because it can be changed into a prime (12031231097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339529 + ... + 373285.

It is an arithmetic number, because the mean of its divisors is an integer number (1552597936).

Almost surely, 2^12031231099 is an apocalyptic number.

12031231099 is a deficient number, since it is larger than the sum of its proper divisors (389552389).

12031231099 is a wasteful number, since it uses less digits than its factorization.

12031231099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45285.

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 12031231099 in words is "twelve billion, thirty-one million, two hundred thirty-one thousand, ninety-nine".