1323166020 has 96 divisors (see below), whose sum is σ = 4071029760. Its totient is φ = 318437760.

The previous prime is 1323166001. The next prime is 1323166027. The reversal of 1323166020 is 206613231.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1323166027) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 84529 + ... + 98951.

It is an arithmetic number, because the mean of its divisors is an integer number (42406560).

Almost surely, 2^1323166020 is an apocalyptic number.

1323166020 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 1323166020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2035514880).

1323166020 is an abundant number, since it is smaller than the sum of its proper divisors (2747863740).

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

1323166020 is a wasteful number, since it uses less digits than its factorization.

1323166020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14585 (or 14583 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 1323166020 is about 36375.3490704900. The cubic root of 1323166020 is about 1097.8376308091.

Adding to 1323166020 its reverse (206613231), we get a palindrome (1529779251).

The spelling of 1323166020 in words is "one billion, three hundred twenty-three million, one hundred sixty-six thousand, twenty".