1303320320 has 72 divisors (see below), whose sum is σ = 3229601760. Its totient is φ = 503336960.

The previous prime is 1303320313. The next prime is 1303320331. The reversal of 1303320320 is 230233031.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19565 + ... + 54675.

It is an arithmetic number, because the mean of its divisors is an integer number (44855580).

Almost surely, 2^1303320320 is an apocalyptic number.

1303320320 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 1303320320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1614800880).

1303320320 is an abundant number, since it is smaller than the sum of its proper divisors (1926281440).

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

1303320320 is an equidigital number, since it uses as much as digits as its factorization.

1303320320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35161 (or 35147 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 17.

The square root of 1303320320 is about 36101.5279455039. The cubic root of 1303320320 is about 1092.3212658398.

Adding to 1303320320 its reverse (230233031), we get a palindrome (1533553351).

The spelling of 1303320320 in words is "one billion, three hundred three million, three hundred twenty thousand, three hundred twenty".