123717312 has 42 divisors (see below), whose sum is σ = 354614988. Its totient is φ = 41238912.

The previous prime is 123717281. The next prime is 123717323. The reversal of 123717312 is 213717321.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106818 + ... + 107969.

It is an arithmetic number, because the mean of its divisors is an integer number (8443214).

Almost surely, 2^123717312 is an apocalyptic number.

123717312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123717312 is an abundant number, since it is smaller than the sum of its proper divisors (230897676).

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

123717312 is a wasteful number, since it uses less digits than its factorization.

123717312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214805 (or 214792 counting only the distinct ones).

The product of its digits is 1764, while the sum is 27.

The square root of 123717312 is about 11122.8284172687. The cubic root of 123717312 is about 498.2838658394.

Subtracting 123717312 from its reverse (213717321), we obtain a palindrome (90000009).

It can be divided in two parts, 12371 and 7312, that added together give a 9-th power (19683 = 3⁹).

The spelling of 123717312 in words is "one hundred twenty-three million, seven hundred seventeen thousand, three hundred twelve".