1316304140521 has 8 divisors (see below), whose sum is σ = 1361982025800. Its totient is φ = 1270645461120.

The previous prime is 1316304140513. The next prime is 1316304140531. The reversal of 1316304140521 is 1250414036131.

It can be written as a sum of positive squares in 4 ways, for example, as 44001355225 + 1272302785296 = 209765^2 + 1127964^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1316304140521 - 2³ = 1316304140513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1316304140531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4661950 + ... + 4936231.

It is an arithmetic number, because the mean of its divisors is an integer number (170247753225).

Almost surely, 2^{1316304140521} is an apocalyptic number.

It is an amenable number.

1316304140521 is a deficient number, since it is larger than the sum of its proper divisors (45677885279).

1316304140521 is an equidigital number, since it uses as much as digits as its factorization.

1316304140521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9602939.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 1316304140521 its reverse (1250414036131), we get a palindrome (2566718176652).

The spelling of 1316304140521 in words is "one trillion, three hundred sixteen billion, three hundred four million, one hundred forty thousand, five hundred twenty-one".