91130047313 has 2 divisors, whose sum is σ = 91130047314. Its totient is φ = 91130047312.

The previous prime is 91130047273. The next prime is 91130047363. The reversal of 91130047313 is 31374003119.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69734549329 + 21395497984 = 264073^2 + 146272^2 .

It is a cyclic number.

It is not a de Polignac number, because 91130047313 - 2¹⁶ = 91129981777 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91130047313.

It is not a weakly prime, because it can be changed into another prime (91130047363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45565023656 + 45565023657.

It is an arithmetic number, because the mean of its divisors is an integer number (45565023657).

Almost surely, 2^91130047313 is an apocalyptic number.

It is an amenable number.

91130047313 is a deficient number, since it is larger than the sum of its proper divisors (1).

91130047313 is an equidigital number, since it uses as much as digits as its factorization.

91130047313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6804, while the sum is 32.

The spelling of 91130047313 in words is "ninety-one billion, one hundred thirty million, forty-seven thousand, three hundred thirteen".