1323132144 has 80 divisors (see below), whose sum is σ = 3483777024. Its totient is φ = 432633600.

The previous prime is 1323132131. The next prime is 1323132269. The reversal of 1323132144 is 4412313231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

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 15 ways as a sum of consecutive naturals, for example, 759114 + ... + 760854.

Almost surely, 2^1323132144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1323132144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1741888512).

1323132144 is an abundant number, since it is smaller than the sum of its proper divisors (2160644880).

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

1323132144 is a wasteful number, since it uses less digits than its factorization.

1323132144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046 (or 2040 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 1323132144 is about 36374.8834224936. The cubic root of 1323132144 is about 1097.8282616989.

Adding to 1323132144 its reverse (4412313231), we get a palindrome (5735445375).

The spelling of 1323132144 in words is "one billion, three hundred twenty-three million, one hundred thirty-two thousand, one hundred forty-four".