1303001320 has 64 divisors (see below), whose sum is σ = 3106933200. Its totient is φ = 490936320.

The previous prime is 1303001311. The next prime is 1303001321. The reversal of 1303001320 is 231003031.

It can be written as a sum of positive squares in 8 ways, for example, as 362597764 + 940403556 = 19042^2 + 30666^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1303001320.

It is not an unprimeable number, because it can be changed into a prime (1303001321) 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, 33862 + ... + 61258.

Almost surely, 2^1303001320 is an apocalyptic number.

1303001320 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 1303001320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1553466600).

1303001320 is an abundant number, since it is smaller than the sum of its proper divisors (1803931880).

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

1303001320 is a wasteful number, since it uses less digits than its factorization.

1303001320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27478 (or 27474 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 1303001320 is about 36097.1095795771. The cubic root of 1303001320 is about 1092.2321399073.

Adding to 1303001320 its reverse (231003031), we get a palindrome (1534004351).

The spelling of 1303001320 in words is "one billion, three hundred three million, one thousand, three hundred twenty".