320545111 has 4 divisors (see below), whose sum is σ = 321957432. Its totient is φ = 319132792.

The previous prime is 320545103. The next prime is 320545163. The reversal of 320545111 is 111545023.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 320545111 - 2³ = 320545103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320545711) 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, 705820 + ... + 706273.

It is an arithmetic number, because the mean of its divisors is an integer number (80489358).

Almost surely, 2^320545111 is an apocalyptic number.

320545111 is a deficient number, since it is larger than the sum of its proper divisors (1412321).

320545111 is a wasteful number, since it uses less digits than its factorization.

320545111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412320.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 320545111 is about 17903.7736525013. The cubic root of 320545111 is about 684.3785444685.

The spelling of 320545111 in words is "three hundred twenty million, five hundred forty-five thousand, one hundred eleven".