1315543240 has 64 divisors (see below), whose sum is σ = 3340440000. Its totient is φ = 461879040.

The previous prime is 1315543219. The next prime is 1315543241. The reversal of 1315543240 is 423455131.

It is a junction number, because it is equal to n+sod(n) for n = 1315543199 and 1315543208.

It is not an unprimeable number, because it can be changed into a prime (1315543241) 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, 38790 + ... + 64309.

It is an arithmetic number, because the mean of its divisors is an integer number (52194375).

Almost surely, 2^1315543240 is an apocalyptic number.

1315543240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315543240 is an abundant number, since it is smaller than the sum of its proper divisors (2024896760).

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

1315543240 is a wasteful number, since it uses less digits than its factorization.

1315543240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103150 (or 103146 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 1315543240 is about 36270.4182495874. The cubic root of 1315543240 is about 1095.7253494229.

Adding to 1315543240 its reverse (423455131), we get a palindrome (1738998371).

The spelling of 1315543240 in words is "one billion, three hundred fifteen million, five hundred forty-three thousand, two hundred forty".