320343407 has 2 divisors, whose sum is σ = 320343408. Its totient is φ = 320343406.

The previous prime is 320343389. The next prime is 320343433. The reversal of 320343407 is 704343023.

It is an a-pointer prime, because the next prime (320343433) can be obtained adding 320343407 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 320343407 - 2⁶ = 320343343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320343497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160171703 + 160171704.

It is an arithmetic number, because the mean of its divisors is an integer number (160171704).

Almost surely, 2^320343407 is an apocalyptic number.

320343407 is a deficient number, since it is larger than the sum of its proper divisors (1).

320343407 is an equidigital number, since it uses as much as digits as its factorization.

320343407 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 26.

The square root of 320343407 is about 17898.1397636738. The cubic root of 320343407 is about 684.2349652449.

The spelling of 320343407 in words is "three hundred twenty million, three hundred forty-three thousand, four hundred seven".