123678031932 has 432 divisors, whose sum is σ = 399666234240. Its totient is φ = 31957825536.

The previous prime is 123678031931. The next prime is 123678031937. The reversal of 123678031932 is 239130876321.

123678031932 is a `hidden beast` number, since 1 + 236 + 78 + 0 + 319 + 32 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123678031931) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 422109178 + ... + 422109470.

It is an arithmetic number, because the mean of its divisors is an integer number (925153320).

Almost surely, 2^123678031932 is an apocalyptic number.

123678031932 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 123678031932, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199833117120).

123678031932 is an abundant number, since it is smaller than the sum of its proper divisors (275988202308).

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

123678031932 is a wasteful number, since it uses less digits than its factorization.

123678031932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 123678031932 in words is "one hundred twenty-three billion, six hundred seventy-eight million, thirty-one thousand, nine hundred thirty-two".