320221007 has 2 divisors, whose sum is σ = 320221008. Its totient is φ = 320221006.

The previous prime is 320220983. The next prime is 320221063. The reversal of 320221007 is 700122023.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320221007 - 2¹⁰ = 320219983 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320221067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160110503 + 160110504.

It is an arithmetic number, because the mean of its divisors is an integer number (160110504).

Almost surely, 2^320221007 is an apocalyptic number.

320221007 is a deficient number, since it is larger than the sum of its proper divisors (1).

320221007 is an equidigital number, since it uses as much as digits as its factorization.

320221007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 320221007 is about 17894.7200872213. The cubic root of 320221007 is about 684.1478077061.

The spelling of 320221007 in words is "three hundred twenty million, two hundred twenty-one thousand, seven".