320146 has 4 divisors (see below), whose sum is σ = 480222. Its totient is φ = 160072.

The previous prime is 320143. The next prime is 320149. The reversal of 320146 is 641023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 641023 = 137 ⋅4679.

It is an interprime number because it is at equal distance from previous prime (320143) and next prime (320149).

It can be written as a sum of positive squares in only one way, i.e., 275625 + 44521 = 525^2 + 211^2 .

It is a super-2 number, since 2×320146² = 204986922632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80035 + ... + 80038.

2³²⁰¹⁴⁶ is an apocalyptic number.

320146 is a deficient number, since it is larger than the sum of its proper divisors (160076).

320146 is a wasteful number, since it uses less digits than its factorization.

320146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160075.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 320146 is about 565.8144572207. The cubic root of 320146 is about 68.4094386391.

Adding to 320146 its reverse (641023), we get a palindrome (961169).

The spelling of 320146 in words is "three hundred twenty thousand, one hundred forty-six".