123323100 has 72 divisors (see below), whose sum is σ = 377819568. Its totient is φ = 30950400.

The previous prime is 123323099. The next prime is 123323107. The reversal of 123323100 is 1323321.

It is a super-2 number, since 2×123323100² = 30417173987220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 123323100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123323107) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6991 + ... + 17190.

It is an arithmetic number, because the mean of its divisors is an integer number (5247494).

Almost surely, 2^123323100 is an apocalyptic number.

123323100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123323100 is an abundant number, since it is smaller than the sum of its proper divisors (254496468).

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

123323100 is a wasteful number, since it uses less digits than its factorization.

123323100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24215 (or 24208 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 123323100 is about 11105.0934259915. The cubic root of 123323100 is about 497.7540599453.

Adding to 123323100 its reverse (1323321), we get a palindrome (124646421).

The spelling of 123323100 in words is "one hundred twenty-three million, three hundred twenty-three thousand, one hundred".