320226191 has 2 divisors, whose sum is σ = 320226192. Its totient is φ = 320226190.

The previous prime is 320226121. The next prime is 320226199. The reversal of 320226191 is 191622023.

It is a strong prime.

It is an emirp because it is prime and its reverse (191622023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320226191 - 2²⁶ = 253117327 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 320226191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320226199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160113095 + 160113096.

It is an arithmetic number, because the mean of its divisors is an integer number (160113096).

Almost surely, 2^320226191 is an apocalyptic number.

320226191 is a deficient number, since it is larger than the sum of its proper divisors (1).

320226191 is an equidigital number, since it uses as much as digits as its factorization.

320226191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 320226191 is about 17894.8649338295. The cubic root of 320226191 is about 684.1514995346.

The spelling of 320226191 in words is "three hundred twenty million, two hundred twenty-six thousand, one hundred ninety-one".