1315521316 has 24 divisors (see below), whose sum is σ = 2506896000. Its totient is φ = 601653024.

The previous prime is 1315521313. The next prime is 1315521323. The reversal of 1315521316 is 6131255131.

It is not an unprimeable number, because it can be changed into a prime (1315521313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296236 + ... + 300643.

It is an arithmetic number, because the mean of its divisors is an integer number (104454000).

Almost surely, 2^1315521316 is an apocalyptic number.

It is an amenable number.

1315521316 is a deficient number, since it is larger than the sum of its proper divisors (1191374684).

1315521316 is a wasteful number, since it uses less digits than its factorization.

1315521316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596931 (or 596929 counting only the distinct ones).

The product of its digits is 2700, while the sum is 28.

The square root of 1315521316 is about 36270.1160185627. The cubic root of 1315521316 is about 1095.7192625038.

Adding to 1315521316 its reverse (6131255131), we get a palindrome (7446776447).

The spelling of 1315521316 in words is "one billion, three hundred fifteen million, five hundred twenty-one thousand, three hundred sixteen".