320312407 has 2 divisors, whose sum is σ = 320312408. Its totient is φ = 320312406.

The previous prime is 320312401. The next prime is 320312411. The reversal of 320312407 is 704213023.

It is a strong prime.

It is an emirp because it is prime and its reverse (704213023) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 320312407 - 2¹⁵ = 320279639 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 (320312401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160156203 + 160156204.

It is an arithmetic number, because the mean of its divisors is an integer number (160156204).

Almost surely, 2^320312407 is an apocalyptic number.

320312407 is a deficient number, since it is larger than the sum of its proper divisors (1).

320312407 is an equidigital number, since it uses as much as digits as its factorization.

320312407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 22.

The square root of 320312407 is about 17897.2737309346. The cubic root of 320312407 is about 684.2128931313.

The spelling of 320312407 in words is "three hundred twenty million, three hundred twelve thousand, four hundred seven".