123013231212 has 24 divisors (see below), whose sum is σ = 287133425712. Its totient is φ = 40989760000.

The previous prime is 123013231181. The next prime is 123013231213. The reversal of 123013231212 is 212132310321.

123013231212 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (123013231213) 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, 1796289 + ... + 1863512.

It is an arithmetic number, because the mean of its divisors is an integer number (11963892738).

Almost surely, 2^123013231212 is an apocalyptic number.

123013231212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123013231212 is an abundant number, since it is smaller than the sum of its proper divisors (164120194500).

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

123013231212 is a wasteful number, since it uses less digits than its factorization.

123013231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3662609 (or 3662607 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 123013231212 its reverse (212132310321), we get a palindrome (335145541533).

The spelling of 123013231212 in words is "one hundred twenty-three billion, thirteen million, two hundred thirty-one thousand, two hundred twelve".