123303205500 has 96 divisors (see below), whose sum is σ = 362545397760. Its totient is φ = 32561582400.

The previous prime is 123303205489. The next prime is 123303205507. The reversal of 123303205500 is 5502303321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123303205507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244540 + ... + 553539.

It is an arithmetic number, because the mean of its divisors is an integer number (3776514560).

Almost surely, 2^123303205500 is an apocalyptic number.

123303205500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123303205500 is an abundant number, since it is smaller than the sum of its proper divisors (239242192260).

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

123303205500 is a wasteful number, since it uses less digits than its factorization.

123303205500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798204 (or 798192 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 24.

Adding to 123303205500 its reverse (5502303321), we get a palindrome (128805508821).

The spelling of 123303205500 in words is "one hundred twenty-three billion, three hundred three million, two hundred five thousand, five hundred".