12031533105 has 32 divisors (see below), whose sum is σ = 20106973440. Its totient is φ = 6131854080.

The previous prime is 12031533089. The next prime is 12031533109. The reversal of 12031533105 is 50133513021.

It is not a de Polignac number, because 12031533105 - 2⁴ = 12031533089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12031533109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349611 + ... + 382479.

It is an arithmetic number, because the mean of its divisors is an integer number (628342920).

Almost surely, 2^12031533105 is an apocalyptic number.

12031533105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12031533105 is a deficient number, since it is larger than the sum of its proper divisors (8075440335).

12031533105 is a wasteful number, since it uses less digits than its factorization.

12031533105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33961.

The product of its (nonzero) digits is 1350, while the sum is 24.

The spelling of 12031533105 in words is "twelve billion, thirty-one million, five hundred thirty-three thousand, one hundred five".