1320441312 has 96 divisors (see below), whose sum is σ = 3555062784. Its totient is φ = 428940800.

The previous prime is 1320441257. The next prime is 1320441329. The reversal of 1320441312 is 2131440231.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1402762 + ... + 1403702.

It is an arithmetic number, because the mean of its divisors is an integer number (37031904).

Almost surely, 2^1320441312 is an apocalyptic number.

1320441312 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 1320441312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1777531392).

1320441312 is an abundant number, since it is smaller than the sum of its proper divisors (2234621472).

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

1320441312 is a wasteful number, since it uses less digits than its factorization.

1320441312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1312 (or 1304 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1320441312 is about 36337.8770981465. The cubic root of 1320441312 is about 1097.0835448932.

Adding to 1320441312 its reverse (2131440231), we get a palindrome (3451881543).

The spelling of 1320441312 in words is "one billion, three hundred twenty million, four hundred forty-one thousand, three hundred twelve".