1323230020 has 144 divisors (see below), whose sum is σ = 3518460288. Its totient is φ = 408038400.

The previous prime is 1323229991. The next prime is 1323230039. The reversal of 1323230020 is 200323231.

It is a junction number, because it is equal to n+sod(n) for n = 1323229976 and 1323230003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1258495 + ... + 1259545.

It is an arithmetic number, because the mean of its divisors is an integer number (24433752).

Almost surely, 2^1323230020 is an apocalyptic number.

1323230020 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 1323230020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1759230144).

1323230020 is an abundant number, since it is smaller than the sum of its proper divisors (2195230268).

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

1323230020 is a wasteful number, since it uses less digits than its factorization.

1323230020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130 (or 1105 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 1323230020 is about 36376.2287764963. The cubic root of 1323230020 is about 1097.8553308998.

Adding to 1323230020 its reverse (200323231), we get a palindrome (1523553251).

The spelling of 1323230020 in words is "one billion, three hundred twenty-three million, two hundred thirty thousand, twenty".