1315321488 has 120 divisors (see below), whose sum is σ = 4023784128. Its totient is φ = 398635776.

The previous prime is 1315321471. The next prime is 1315321517. The reversal of 1315321488 is 8841235131.

1315321488 is a `hidden beast` number, since 1 + 3 + 153 + 21 + 488 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 120181 + ... + 130667.

Almost surely, 2^1315321488 is an apocalyptic number.

1315321488 is a gapful number since it is divisible by the number (18) 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 1315321488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2011892064).

1315321488 is an abundant number, since it is smaller than the sum of its proper divisors (2708462640).

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

1315321488 is a wasteful number, since it uses less digits than its factorization.

1315321488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10581 (or 10572 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 1315321488 is about 36267.3611943301. The cubic root of 1315321488 is about 1095.6637796891.

The spelling of 1315321488 in words is "one billion, three hundred fifteen million, three hundred twenty-one thousand, four hundred eighty-eight".