1310003328 has 64 divisors (see below), whose sum is σ = 3485437920. Its totient is φ = 435947520.

The previous prime is 1310003327. The next prime is 1310003339. The reversal of 1310003328 is 8233000131.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×1310003328² = 3432217438742151168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1310003327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 262876 + ... + 267812.

Almost surely, 2^1310003328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1310003328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1742718960).

1310003328 is an abundant number, since it is smaller than the sum of its proper divisors (2175434592).

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

1310003328 is an equidigital number, since it uses as much as digits as its factorization.

1310003328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5645 (or 5633 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 1310003328 is about 36193.9681162483. The cubic root of 1310003328 is about 1094.1851079391.

Adding to 1310003328 its reverse (8233000131), we get a palindrome (9543003459).

The spelling of 1310003328 in words is "one billion, three hundred ten million, three thousand, three hundred twenty-eight".