320263507 has 2 divisors, whose sum is σ = 320263508. Its totient is φ = 320263506.

The previous prime is 320263439. The next prime is 320263543. The reversal of 320263507 is 705362023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320263507 - 2¹⁵ = 320230739 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (320263597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160131753 + 160131754.

It is an arithmetic number, because the mean of its divisors is an integer number (160131754).

Almost surely, 2^320263507 is an apocalyptic number.

320263507 is a deficient number, since it is larger than the sum of its proper divisors (1).

320263507 is an equidigital number, since it uses as much as digits as its factorization.

320263507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 320263507 is about 17895.9075489342. The cubic root of 320263507 is about 684.1780732571.

The spelling of 320263507 in words is "three hundred twenty million, two hundred sixty-three thousand, five hundred seven".