1300312320 has 144 divisors (see below), whose sum is σ = 4397379840. Its totient is φ = 326336512.

The previous prime is 1300312319. The next prime is 1300312333. The reversal of 1300312320 is 232130031.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1300312320.

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, 55321 + ... + 75239.

It is an arithmetic number, because the mean of its divisors is an integer number (30537360).

Almost surely, 2^1300312320 is an apocalyptic number.

1300312320 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 1300312320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2198689920).

1300312320 is an abundant number, since it is smaller than the sum of its proper divisors (3097067520).

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

1300312320 is a wasteful number, since it uses less digits than its factorization.

1300312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19960 (or 19946 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 1300312320 is about 36059.8435936708. The cubic root of 1300312320 is about 1091.4802770436.

Adding to 1300312320 its reverse (232130031), we get a palindrome (1532442351).

The spelling of 1300312320 in words is "one billion, three hundred million, three hundred twelve thousand, three hundred twenty".