9931548319013 has 2 divisors, whose sum is σ = 9931548319014. Its totient is φ = 9931548319012.

The previous prime is 9931548318983. The next prime is 9931548319159. The reversal of 9931548319013 is 3109138451399.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9873810476644 + 57737842369 = 3142262^2 + 240287^2 .

It is a cyclic number.

It is not a de Polignac number, because 9931548319013 - 2²⁴ = 9931531541797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9931548319013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9931548319213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4965774159506 + 4965774159507.

It is an arithmetic number, because the mean of its divisors is an integer number (4965774159507).

Almost surely, 2^{9931548319013} is an apocalyptic number.

It is an amenable number.

9931548319013 is a deficient number, since it is larger than the sum of its proper divisors (1).

9931548319013 is an equidigital number, since it uses as much as digits as its factorization.

9931548319013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3149280, while the sum is 56.

The spelling of 9931548319013 in words is "nine trillion, nine hundred thirty-one billion, five hundred forty-eight million, three hundred nineteen thousand, thirteen".