1313521316 has 12 divisors (see below), whose sum is σ = 2300538240. Its totient is φ = 656224680.

The previous prime is 1313521291. The next prime is 1313521327. The reversal of 1313521316 is 6131253131.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128456 + ... + 138303.

It is an arithmetic number, because the mean of its divisors is an integer number (191711520).

Almost surely, 2^1313521316 is an apocalyptic number.

It is an amenable number.

1313521316 is a deficient number, since it is larger than the sum of its proper divisors (987016924).

1313521316 is a wasteful number, since it uses less digits than its factorization.

1313521316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267994 (or 267992 counting only the distinct ones).

The product of its digits is 1620, while the sum is 26.

The square root of 1313521316 is about 36242.5346243885. The cubic root of 1313521316 is about 1095.1637032760.

Adding to 1313521316 its reverse (6131253131), we get a palindrome (7444774447).

The spelling of 1313521316 in words is "one billion, three hundred thirteen million, five hundred twenty-one thousand, three hundred sixteen".