113581171213 has 2 divisors, whose sum is σ = 113581171214. Its totient is φ = 113581171212.

The previous prime is 113581171199. The next prime is 113581171243. The reversal of 113581171213 is 312171185311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99500500969 + 14080670244 = 315437^2 + 118662^2 .

It is a cyclic number.

It is not a de Polignac number, because 113581171213 - 2²¹ = 113579074061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113581171243) 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, 56790585606 + 56790585607.

It is an arithmetic number, because the mean of its divisors is an integer number (56790585607).

Almost surely, 2^113581171213 is an apocalyptic number.

It is an amenable number.

113581171213 is a deficient number, since it is larger than the sum of its proper divisors (1).

113581171213 is an equidigital number, since it uses as much as digits as its factorization.

113581171213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 34.

The spelling of 113581171213 in words is "one hundred thirteen billion, five hundred eighty-one million, one hundred seventy-one thousand, two hundred thirteen".