1320444312 has 64 divisors (see below), whose sum is σ = 3634329600. Its totient is φ = 396455040.

The previous prime is 1320444299. The next prime is 1320444313. The reversal of 1320444312 is 2134440231.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320444313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5833 + ... + 51719.

It is an arithmetic number, because the mean of its divisors is an integer number (56786400).

Almost surely, 2^1320444312 is an apocalyptic number.

1320444312 is a gapful number since it is divisible by the number (12) 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 1320444312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1817164800).

1320444312 is an abundant number, since it is smaller than the sum of its proper divisors (2313885288).

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

1320444312 is a wasteful number, since it uses less digits than its factorization.

1320444312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46016 (or 46012 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1320444312 is about 36337.9183773644. The cubic root of 1320444312 is about 1097.0843757387.

Adding to 1320444312 its reverse (2134440231), we get a palindrome (3454884543).

The spelling of 1320444312 in words is "one billion, three hundred twenty million, four hundred forty-four thousand, three hundred twelve".