123678312 has 32 divisors (see below), whose sum is σ = 310034400. Its totient is φ = 41114304.

The previous prime is 123678299. The next prime is 123678329. The reversal of 123678312 is 213876321.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2298 + ... + 15894.

It is an arithmetic number, because the mean of its divisors is an integer number (9688575).

Almost surely, 2^123678312 is an apocalyptic number.

123678312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123678312 is an abundant number, since it is smaller than the sum of its proper divisors (186356088).

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

123678312 is a wasteful number, since it uses less digits than its factorization.

123678312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13985 (or 13981 counting only the distinct ones).

The product of its digits is 12096, while the sum is 33.

The square root of 123678312 is about 11121.0751278822. The cubic root of 123678312 is about 498.2315015345.

The spelling of 123678312 in words is "one hundred twenty-three million, six hundred seventy-eight thousand, three hundred twelve".