123391488 has 160 divisors (see below), whose sum is σ = 367297920. Its totient is φ = 36495360.

The previous prime is 123391487. The next prime is 123391511. The reversal of 123391488 is 884193321.

Its product of digits (41472) is a multiple of the sum of its prime divisors (192).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123391483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1131978 + ... + 1132086.

It is an arithmetic number, because the mean of its divisors is an integer number (2295612).

Almost surely, 2^123391488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123391488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183648960).

123391488 is an abundant number, since it is smaller than the sum of its proper divisors (243906432).

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

123391488 is a wasteful number, since it uses less digits than its factorization.

123391488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208 (or 192 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 123391488 is about 11108.1721268623. The cubic root of 123391488 is about 497.8460516708.

The spelling of 123391488 in words is "one hundred twenty-three million, three hundred ninety-one thousand, four hundred eighty-eight".