1223830100 has 72 divisors (see below), whose sum is σ = 2702952000. Its totient is φ = 480902400.

The previous prime is 1223830099. The next prime is 1223830117. The reversal of 1223830100 is 10383221.

It is a super-2 number, since 2×1223830100² = 2995520227332020000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1770755 + ... + 1771445.

It is an arithmetic number, because the mean of its divisors is an integer number (37541000).

Almost surely, 2^1223830100 is an apocalyptic number.

1223830100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223830100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1351476000).

1223830100 is an abundant number, since it is smaller than the sum of its proper divisors (1479121900).

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

1223830100 is a wasteful number, since it uses less digits than its factorization.

1223830100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 993 (or 986 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1223830100 is about 34983.2831506707. The cubic root of 1223830100 is about 1069.6467521144.

The spelling of 1223830100 in words is "one billion, two hundred twenty-three million, eight hundred thirty thousand, one hundred".