320560243 has 8 divisors (see below), whose sum is σ = 335563776. Its totient is φ = 305848200.

The previous prime is 320560237. The next prime is 320560249. The reversal of 320560243 is 342065023.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (320560237) and next prime (320560249).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320560243 - 2⁹ = 320559731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320560249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70621 + ... + 75022.

It is an arithmetic number, because the mean of its divisors is an integer number (41945472).

Almost surely, 2^320560243 is an apocalyptic number.

320560243 is a deficient number, since it is larger than the sum of its proper divisors (15003533).

320560243 is a wasteful number, since it uses less digits than its factorization.

320560243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145745.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 320560243 is about 17904.1962399880. The cubic root of 320560243 is about 684.3893134709.

The spelling of 320560243 in words is "three hundred twenty million, five hundred sixty thousand, two hundred forty-three".