1313052320 has 24 divisors (see below), whose sum is σ = 3102086484. Its totient is φ = 525220864.

The previous prime is 1313052289. The next prime is 1313052353. The reversal of 1313052320 is 232503131.

It can be written as a sum of positive squares in 2 ways, for example, as 1313047696 + 4624 = 36236^2 + 68^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1313052292 and 1313052301.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4103129 + ... + 4103448.

Almost surely, 2^1313052320 is an apocalyptic number.

1313052320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313052320 is an abundant number, since it is smaller than the sum of its proper divisors (1789034164).

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

1313052320 is an equidigital number, since it uses as much as digits as its factorization.

1313052320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8206592 (or 8206584 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

The square root of 1313052320 is about 36236.0638038957. The cubic root of 1313052320 is about 1095.0333441331.

Adding to 1313052320 its reverse (232503131), we get a palindrome (1545555451).

The spelling of 1313052320 in words is "one billion, three hundred thirteen million, fifty-two thousand, three hundred twenty".