123708312 has 192 divisors, whose sum is σ = 419328000. Its totient is φ = 32078592.

The previous prime is 123708311. The next prime is 123708349. The reversal of 123708312 is 213807321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123708311) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 517489 + ... + 517727.

It is an arithmetic number, because the mean of its divisors is an integer number (2184000).

Almost surely, 2^123708312 is an apocalyptic number.

123708312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123708312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209664000).

123708312 is an abundant number, since it is smaller than the sum of its proper divisors (295619688).

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

123708312 is a wasteful number, since it uses less digits than its factorization.

123708312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350 (or 343 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 123708312 is about 11122.4238365565. The cubic root of 123708312 is about 498.2717827459.

Subtracting 123708312 from its reverse (213807321), we obtain a palindrome (90099009).

The spelling of 123708312 in words is "one hundred twenty-three million, seven hundred eight thousand, three hundred twelve".