123312112232 has 32 divisors (see below), whose sum is σ = 249045511680. Its totient is φ = 57072924480.

The previous prime is 123312112207. The next prime is 123312112277. The reversal of 123312112232 is 232211213321.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 123312112198 and 123312112207.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10803563 + ... + 10814970.

It is an arithmetic number, because the mean of its divisors is an integer number (7782672240).

Almost surely, 2^123312112232 is an apocalyptic number.

It is an amenable number.

123312112232 is an abundant number, since it is smaller than the sum of its proper divisors (125733399448).

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

123312112232 is a wasteful number, since it uses less digits than its factorization.

123312112232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21618593 (or 21618589 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 123312112232 its reverse (232211213321), we get a palindrome (355523325553).

The spelling of 123312112232 in words is "one hundred twenty-three billion, three hundred twelve million, one hundred twelve thousand, two hundred thirty-two".