123213330312 has 64 divisors (see below), whose sum is σ = 319977820800. Its totient is φ = 39490268160.

The previous prime is 123213330287. The next prime is 123213330313. The reversal of 123213330312 is 213033312321.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (123213330313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199548 + ... + 535019.

It is an arithmetic number, because the mean of its divisors is an integer number (4999653450).

Almost surely, 2^123213330312 is an apocalyptic number.

123213330312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123213330312 is an abundant number, since it is smaller than the sum of its proper divisors (196764490488).

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

123213330312 is a wasteful number, since it uses less digits than its factorization.

123213330312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734846 (or 734842 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 123213330312 its reverse (213033312321), we get a palindrome (336246642633).

The spelling of 123213330312 in words is "one hundred twenty-three billion, two hundred thirteen million, three hundred thirty thousand, three hundred twelve".