1323140444 has 24 divisors (see below), whose sum is σ = 2386433280. Its totient is φ = 641524464.

The previous prime is 1323140443. The next prime is 1323140459. The reversal of 1323140444 is 4440413231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1323140443) 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 7 ways as a sum of consecutive naturals, for example, 3764 + ... + 51579.

It is an arithmetic number, because the mean of its divisors is an integer number (99434720).

Almost surely, 2^1323140444 is an apocalyptic number.

It is an amenable number.

1323140444 is a deficient number, since it is larger than the sum of its proper divisors (1063292836).

1323140444 is a wasteful number, since it uses less digits than its factorization.

1323140444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55529 (or 55527 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1323140444 is about 36374.9975120274. The cubic root of 1323140444 is about 1097.8305572508.

Adding to 1323140444 its reverse (4440413231), we get a palindrome (5763553675).

The spelling of 1323140444 in words is "one billion, three hundred twenty-three million, one hundred forty thousand, four hundred forty-four".