1320232100 has 144 divisors (see below), whose sum is σ = 3317496000. Its totient is φ = 451008000.

The previous prime is 1320232099. The next prime is 1320232127. The reversal of 1320232100 is 12320231.

It is a happy 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 47 ways as a sum of consecutive naturals, for example, 3782726 + ... + 3783074.

Almost surely, 2^1320232100 is an apocalyptic number.

1320232100 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 1320232100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1658748000).

1320232100 is an abundant number, since it is smaller than the sum of its proper divisors (1997263900).

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

1320232100 is a wasteful number, since it uses less digits than its factorization.

1320232100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 567 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1320232100 is about 36334.9982798954. The cubic root of 1320232100 is about 1097.0256008398.

Adding to 1320232100 its reverse (12320231), we get a palindrome (1332552331).

The spelling of 1320232100 in words is "one billion, three hundred twenty million, two hundred thirty-two thousand, one hundred".