320201897 has 2 divisors, whose sum is σ = 320201898. Its totient is φ = 320201896.

The previous prime is 320201867. The next prime is 320201899. The reversal of 320201897 is 798102023.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 279190681 + 41011216 = 16709^2 + 6404^2 .

It is a cyclic number.

It is not a de Polignac number, because 320201897 - 2¹⁰ = 320200873 is a prime.

Together with 320201899, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320201899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160100948 + 160100949.

It is an arithmetic number, because the mean of its divisors is an integer number (160100949).

Almost surely, 2^320201897 is an apocalyptic number.

It is an amenable number.

320201897 is a deficient number, since it is larger than the sum of its proper divisors (1).

320201897 is an equidigital number, since it uses as much as digits as its factorization.

320201897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 320201897 is about 17894.1861228724. The cubic root of 320201897 is about 684.1341980174.

The spelling of 320201897 in words is "three hundred twenty million, two hundred one thousand, eight hundred ninety-seven".