395331 has 4 divisors (see below), whose sum is σ = 527112. Its totient is φ = 263552.

The previous prime is 395323. The next prime is 395377. The reversal of 395331 is 133593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 133593 = 3 ⋅44531.

It is a cyclic number.

It is not a de Polignac number, because 395331 - 2³ = 395323 is a prime.

It is a super-2 number, since 2×395331² = 312573199122, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

395331 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 395331.

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, 65886 + ... + 65891.

It is an arithmetic number, because the mean of its divisors is an integer number (131778).

2³⁹⁵³³¹ is an apocalyptic number.

395331 is a deficient number, since it is larger than the sum of its proper divisors (131781).

395331 is a wasteful number, since it uses less digits than its factorization.

395331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131780.

The product of its digits is 1215, while the sum is 24.

The square root of 395331 is about 628.7535288171. The cubic root of 395331 is about 73.3928282113.

The spelling of 395331 in words is "three hundred ninety-five thousand, three hundred thirty-one".