1315055320 has 64 divisors (see below), whose sum is σ = 3067878240. Its totient is φ = 506956800.

The previous prime is 1315055293. The next prime is 1315055323. The reversal of 1315055320 is 235505131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1315055323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131290 + ... + 140950.

Almost surely, 2^1315055320 is an apocalyptic number.

1315055320 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 1315055320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1533939120).

1315055320 is an abundant number, since it is smaller than the sum of its proper divisors (1752822920).

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

1315055320 is a wasteful number, since it uses less digits than its factorization.

1315055320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9796 (or 9792 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 25.

The square root of 1315055320 is about 36263.6914833556. The cubic root of 1315055320 is about 1095.5898686559.

The spelling of 1315055320 in words is "one billion, three hundred fifteen million, fifty-five thousand, three hundred twenty".