123312080 has 40 divisors (see below), whose sum is σ = 287258400. Its totient is φ = 49228928.

The previous prime is 123312061. The next prime is 123312103. The reversal of 123312080 is 80213321.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 51551 + ... + 53889.

It is an arithmetic number, because the mean of its divisors is an integer number (7181460).

Almost surely, 2^123312080 is an apocalyptic number.

123312080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123312080 is an abundant number, since it is smaller than the sum of its proper divisors (163946320).

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

123312080 is a wasteful number, since it uses less digits than its factorization.

123312080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3011 (or 3005 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 123312080 is about 11104.5972461859. The cubic root of 123312080 is about 497.7392332742.

The spelling of 123312080 in words is "one hundred twenty-three million, three hundred twelve thousand, eighty".