1315030640 has 120 divisors (see below), whose sum is σ = 3880077552. Its totient is φ = 409866240.

The previous prime is 1315030627. The next prime is 1315030667. The reversal of 1315030640 is 460305131.

It is a happy number.

It is a congruent number.

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, 27872 + ... + 58368.

Almost surely, 2^1315030640 is an apocalyptic number.

1315030640 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 1315030640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1940038776).

1315030640 is an abundant number, since it is smaller than the sum of its proper divisors (2565046912).

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

1315030640 is a wasteful number, since it uses less digits than its factorization.

1315030640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30535 (or 30522 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 1315030640 is about 36263.3511964904. The cubic root of 1315030640 is about 1095.5830148689.

Adding to 1315030640 its reverse (460305131), we get a palindrome (1775335771).

The spelling of 1315030640 in words is "one billion, three hundred fifteen million, thirty thousand, six hundred forty".