12031231129 has 8 divisors (see below), whose sum is σ = 12761131680. Its totient is φ = 11310998400.

The previous prime is 12031231123. The next prime is 12031231141. The reversal of 12031231129 is 92113213021.

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 12031231129 - 2⁵ = 12031231097 is a prime.

It is a super-2 number, since 2×12031231129² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12031231123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2414392 + ... + 2419369.

It is an arithmetic number, because the mean of its divisors is an integer number (1595141460).

Almost surely, 2^12031231129 is an apocalyptic number.

12031231129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12031231129 is a deficient number, since it is larger than the sum of its proper divisors (729900551).

12031231129 is a wasteful number, since it uses less digits than its factorization.

12031231129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4833911.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 12031231129 in words is "twelve billion, thirty-one million, two hundred thirty-one thousand, one hundred twenty-nine".