123113312312 has 8 divisors (see below), whose sum is σ = 230837460600. Its totient is φ = 61556656152.

The previous prime is 123113312269. The next prime is 123113312347. The reversal of 123113312312 is 213213311321.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7694582012 + ... + 7694582027.

It is an arithmetic number, because the mean of its divisors is an integer number (28854682575).

Almost surely, 2^123113312312 is an apocalyptic number.

It is an amenable number.

123113312312 is a deficient number, since it is larger than the sum of its proper divisors (107724148288).

123113312312 is a wasteful number, since it uses less digits than its factorization.

123113312312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15389164045 (or 15389164041 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 123113312312 its reverse (213213311321), we get a palindrome (336326623633).

Subtracting 123113312312 from its reverse (213213311321), we obtain a palindrome (90099999009).

The spelling of 123113312312 in words is "one hundred twenty-three billion, one hundred thirteen million, three hundred twelve thousand, three hundred twelve".