1301816320 has 132 divisors (see below), whose sum is σ = 3633384060. Its totient is φ = 446251008.

The previous prime is 1301816291. The next prime is 1301816323. The reversal of 1301816320 is 236181031.

It can be written as a sum of positive squares in 2 ways, for example, as 759112704 + 542703616 = 27552^2 + 23296^2 .

It is not an unprimeable number, because it can be changed into a prime (1301816323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248286 + ... + 253474.

Almost surely, 2^1301816320 is an apocalyptic number.

1301816320 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 1301816320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1816692030).

1301816320 is an abundant number, since it is smaller than the sum of its proper divisors (2331567740).

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

1301816320 is an equidigital number, since it uses as much as digits as its factorization.

1301816320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5228 (or 5203 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1301816320 is about 36080.6917893768. The cubic root of 1301816320 is about 1091.9009333754.

Adding to 1301816320 its reverse (236181031), we get a palindrome (1537997351).

The spelling of 1301816320 in words is "one billion, three hundred one million, eight hundred sixteen thousand, three hundred twenty".