123112313206 has 24 divisors (see below), whose sum is σ = 187956712944. Its totient is φ = 60477299280.

The previous prime is 123112313201. The next prime is 123112313239. The reversal of 123112313206 is 602313211321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123112313201) 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 11 ways as a sum of consecutive naturals, for example, 2469135 + ... + 2518501.

It is an arithmetic number, because the mean of its divisors is an integer number (7831529706).

Almost surely, 2^123112313206 is an apocalyptic number.

123112313206 is a deficient number, since it is larger than the sum of its proper divisors (64844399738).

123112313206 is an equidigital number, since it uses as much as digits as its factorization.

123112313206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49716 (or 49633 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 123112313206 its reverse (602313211321), we get a palindrome (725425524527).

The spelling of 123112313206 in words is "one hundred twenty-three billion, one hundred twelve million, three hundred thirteen thousand, two hundred six".