123231648 has 48 divisors (see below), whose sum is σ = 328980960. Its totient is φ = 40379136.

The previous prime is 123231629. The next prime is 123231649. The reversal of 123231648 is 846132321.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (123231649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5215 + ... + 16542.

It is an arithmetic number, because the mean of its divisors is an integer number (6853770).

Almost surely, 2^123231648 is an apocalyptic number.

It is an amenable number.

123231648 is an abundant number, since it is smaller than the sum of its proper divisors (205749312).

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

123231648 is a wasteful number, since it uses less digits than its factorization.

123231648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21829 (or 21821 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 123231648 is about 11100.9750923061. The cubic root of 123231648 is about 497.6309906499.

Adding to 123231648 its reverse (846132321), we get a palindrome (969363969).

The spelling of 123231648 in words is "one hundred twenty-three million, two hundred thirty-one thousand, six hundred forty-eight".