123383988 has 72 divisors (see below), whose sum is σ = 383871488. Its totient is φ = 32539968.

The previous prime is 123383971. The next prime is 123384007. The reversal of 123383988 is 889383321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15556 + ... + 22107.

Almost surely, 2^123383988 is an apocalyptic number.

123383988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

123383988 is an abundant number, since it is smaller than the sum of its proper divisors (260487500).

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

123383988 is a wasteful number, since it uses less digits than its factorization.

123383988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37693 (or 37688 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 123383988 is about 11107.8345324370. The cubic root of 123383988 is about 497.8359647486.

The spelling of 123383988 in words is "one hundred twenty-three million, three hundred eighty-three thousand, nine hundred eighty-eight".