1315253540 has 12 divisors (see below), whose sum is σ = 2762032476. Its totient is φ = 526101408.

The previous prime is 1315253539. The next prime is 1315253543. The reversal of 1315253540 is 453525131.

It can be written as a sum of positive squares in 2 ways, for example, as 618715876 + 696537664 = 24874^2 + 26392^2 .

It is not an unprimeable number, because it can be changed into a prime (1315253543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32881319 + ... + 32881358.

It is an arithmetic number, because the mean of its divisors is an integer number (230169373).

Almost surely, 2^1315253540 is an apocalyptic number.

1315253540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1315253540 is an abundant number, since it is smaller than the sum of its proper divisors (1446778936).

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

1315253540 is a wasteful number, since it uses less digits than its factorization.

1315253540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65762686 (or 65762684 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1315253540 is about 36266.4244170831. The cubic root of 1315253540 is about 1095.6449124527.

Adding to 1315253540 its reverse (453525131), we get a palindrome (1768778671).

The spelling of 1315253540 in words is "one billion, three hundred fifteen million, two hundred fifty-three thousand, five hundred forty".