353220191 has 2 divisors, whose sum is σ = 353220192. Its totient is φ = 353220190.

The previous prime is 353220121. The next prime is 353220221. The reversal of 353220191 is 191022353.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-353220191 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 353220191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (353220121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176610095 + 176610096.

It is an arithmetic number, because the mean of its divisors is an integer number (176610096).

Almost surely, 2^353220191 is an apocalyptic number.

353220191 is a deficient number, since it is larger than the sum of its proper divisors (1).

353220191 is an equidigital number, since it uses as much as digits as its factorization.

353220191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 353220191 is about 18794.1531067510. The cubic root of 353220191 is about 706.8845783061.

The spelling of 353220191 in words is "three hundred fifty-three million, two hundred twenty thousand, one hundred ninety-one".