1315323056 has 40 divisors (see below), whose sum is σ = 2654889600. Its totient is φ = 630581760.

The previous prime is 1315323017. The next prime is 1315323071. The reversal of 1315323056 is 6503235131.

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, 41900 + ... + 66228.

It is an arithmetic number, because the mean of its divisors is an integer number (66372240).

Almost surely, 2^1315323056 is an apocalyptic number.

1315323056 is a gapful number since it is divisible by the number (16) 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 1315323056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1327444800).

1315323056 is an abundant number, since it is smaller than the sum of its proper divisors (1339566544).

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

1315323056 is a wasteful number, since it uses less digits than its factorization.

1315323056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24477 (or 24471 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 1315323056 is about 36267.3828115567. The cubic root of 1315323056 is about 1095.6642150706.

Adding to 1315323056 its reverse (6503235131), we get a palindrome (7818558187).

The spelling of 1315323056 in words is "one billion, three hundred fifteen million, three hundred twenty-three thousand, fifty-six".