320263873 has 4 divisors (see below), whose sum is σ = 320569648. Its totient is φ = 319958100.

The previous prime is 320263861. The next prime is 320263877. The reversal of 320263873 is 378362023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320263873 - 2¹⁷ = 320132801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320263877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151311 + ... + 153412.

It is an arithmetic number, because the mean of its divisors is an integer number (80142412).

Almost surely, 2^320263873 is an apocalyptic number.

It is an amenable number.

320263873 is a deficient number, since it is larger than the sum of its proper divisors (305775).

320263873 is a wasteful number, since it uses less digits than its factorization.

320263873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305774.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 320263873 is about 17895.9177747329. The cubic root of 320263873 is about 684.1783338852.

The spelling of 320263873 in words is "three hundred twenty million, two hundred sixty-three thousand, eight hundred seventy-three".