320256307 has 12 divisors (see below), whose sum is σ = 378860760. Its totient is φ = 269850336.

The previous prime is 320256259. The next prime is 320256317. The reversal of 320256307 is 703652023.

It is not a de Polignac number, because 320256307 - 2⁷ = 320256179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320256317) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52498 + ... + 58279.

It is an arithmetic number, because the mean of its divisors is an integer number (31571730).

Almost surely, 2^320256307 is an apocalyptic number.

320256307 is a deficient number, since it is larger than the sum of its proper divisors (58604453).

320256307 is a wasteful number, since it uses less digits than its factorization.

320256307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110850 (or 110843 counting only the distinct ones).

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

The square root of 320256307 is about 17895.7063844935. The cubic root of 320256307 is about 684.1729461051.

The spelling of 320256307 in words is "three hundred twenty million, two hundred fifty-six thousand, three hundred seven".