191241373 has 2 divisors, whose sum is σ = 191241374. Its totient is φ = 191241372.

The previous prime is 191241319. The next prime is 191241377. The reversal of 191241373 is 373142191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188293284 + 2948089 = 13722^2 + 1717^2 .

It is an emirp because it is prime and its reverse (373142191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 191241373 - 2¹⁷ = 191110301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191241377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95620686 + 95620687.

It is an arithmetic number, because the mean of its divisors is an integer number (95620687).

Almost surely, 2^191241373 is an apocalyptic number.

It is an amenable number.

191241373 is a deficient number, since it is larger than the sum of its proper divisors (1).

191241373 is an equidigital number, since it uses as much as digits as its factorization.

191241373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 191241373 is about 13829.0047725785. The cubic root of 191241373 is about 576.1390130734.

The spelling of 191241373 in words is "one hundred ninety-one million, two hundred forty-one thousand, three hundred seventy-three".