191241313 has 12 divisors (see below), whose sum is σ = 204530508. Its totient is φ = 178196480.

The previous prime is 191241307. The next prime is 191241317. The reversal of 191241313 is 313142191.

It can be written as a sum of positive squares in 6 ways, for example, as 75829264 + 115412049 = 8708^2 + 10743^2 .

It is a de Polignac number, because none of the positive numbers 2^k-191241313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (191241317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 216633 + ... + 217513.

It is an arithmetic number, because the mean of its divisors is an integer number (17044209).

Almost surely, 2^191241313 is an apocalyptic number.

It is an amenable number.

191241313 is a deficient number, since it is larger than the sum of its proper divisors (13289195).

191241313 is an equidigital number, since it uses as much as digits as its factorization.

191241313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1124 (or 1011 counting only the distinct ones).

The product of its digits is 648, while the sum is 25.

The square root of 191241313 is about 13829.0026032249. The cubic root of 191241313 is about 576.1389528209.

The spelling of 191241313 in words is "one hundred ninety-one million, two hundred forty-one thousand, three hundred thirteen".