395311 has 4 divisors (see below), whose sum is σ = 451792. Its totient is φ = 338832.

The previous prime is 395309. The next prime is 395321. The reversal of 395311 is 113593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113593 = 29 ⋅3917.

It is a cyclic number.

It is not a de Polignac number, because 395311 - 2¹ = 395309 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395321) 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, 28230 + ... + 28243.

It is an arithmetic number, because the mean of its divisors is an integer number (112948).

2³⁹⁵³¹¹ is an apocalyptic number.

395311 is a deficient number, since it is larger than the sum of its proper divisors (56481).

395311 is an equidigital number, since it uses as much as digits as its factorization.

395311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56480.

The product of its digits is 405, while the sum is 22.

The square root of 395311 is about 628.7376241327. The cubic root of 395311 is about 73.3915905301.

The spelling of 395311 in words is "three hundred ninety-five thousand, three hundred eleven".