12312011206 has 32 divisors (see below), whose sum is σ = 20739172608. Its totient is φ = 5433419040.

The previous prime is 12312011203. The next prime is 12312011207. The reversal of 12312011206 is 60211021321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312011203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119016 + ... + 196948.

It is an arithmetic number, because the mean of its divisors is an integer number (648099144).

Almost surely, 2^12312011206 is an apocalyptic number.

12312011206 is a deficient number, since it is larger than the sum of its proper divisors (8427161402).

12312011206 is a wasteful number, since it uses less digits than its factorization.

12312011206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78156.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 12312011206 its reverse (60211021321), we get a palindrome (72523032527).

The spelling of 12312011206 in words is "twelve billion, three hundred twelve million, eleven thousand, two hundred six".