1313521012 has 48 divisors (see below), whose sum is σ = 2430388800. Its totient is φ = 620238080.

The previous prime is 1313521009. The next prime is 1313521019. The reversal of 1313521012 is 2101253131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313521019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1922823 + ... + 1923505.

It is an arithmetic number, because the mean of its divisors is an integer number (50633100).

Almost surely, 2^1313521012 is an apocalyptic number.

It is an amenable number.

1313521012 is a deficient number, since it is larger than the sum of its proper divisors (1116867788).

1313521012 is a wasteful number, since it uses less digits than its factorization.

1313521012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1313521012 is about 36242.5304304211. The cubic root of 1313521012 is about 1095.1636187882.

Adding to 1313521012 its reverse (2101253131), we get a palindrome (3414774143).

The spelling of 1313521012 in words is "one billion, three hundred thirteen million, five hundred twenty-one thousand, twelve".