320155 has 8 divisors (see below), whose sum is σ = 419184. Its totient is φ = 232800.

The previous prime is 320153. The next prime is 320179. The reversal of 320155 is 551023.

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

It is not a de Polignac number, because 320155 - 2¹ = 320153 is a prime.

It is a Duffinian number.

320155 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320153) 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, 2856 + ... + 2965.

It is an arithmetic number, because the mean of its divisors is an integer number (52398).

2³²⁰¹⁵⁵ is an apocalyptic number.

320155 is a deficient number, since it is larger than the sum of its proper divisors (99029).

320155 is a wasteful number, since it uses less digits than its factorization.

320155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5837.

The product of its (nonzero) digits is 150, while the sum is 16.

The square root of 320155 is about 565.8224103020. The cubic root of 320155 is about 68.4100796791.

Adding to 320155 its reverse (551023), we get a palindrome (871178).

The spelling of 320155 in words is "three hundred twenty thousand, one hundred fifty-five".