1315300520 has 32 divisors (see below), whose sum is σ = 2964404520. Its totient is φ = 525235200.

The previous prime is 1315300487. The next prime is 1315300537. The reversal of 1315300520 is 250035131.

It can be written as a sum of positive squares in 4 ways, for example, as 1153145764 + 162154756 = 33958^2 + 12734^2 .

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 = 1315300492 and 1315300501.

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, 3317 + ... + 51396.

Almost surely, 2^1315300520 is an apocalyptic number.

1315300520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315300520 is an abundant number, since it is smaller than the sum of its proper divisors (1649104000).

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

1315300520 is a wasteful number, since it uses less digits than its factorization.

1315300520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55325 (or 55321 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 1315300520 is about 36267.0721178316. The cubic root of 1315300520 is about 1095.6579575383.

Adding to 1315300520 its reverse (250035131), we get a palindrome (1565335651).

The spelling of 1315300520 in words is "one billion, three hundred fifteen million, three hundred thousand, five hundred twenty".