485931 has 4 divisors (see below), whose sum is σ = 647912. Its totient is φ = 323952.

The previous prime is 485923. The next prime is 485941. The reversal of 485931 is 139584.

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

It is not a de Polignac number, because 485931 - 2³ = 485923 is a prime.

It is a super-2 number, since 2×485931² = 472257873522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (485941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80986 + ... + 80991.

It is an arithmetic number, because the mean of its divisors is an integer number (161978).

2⁴⁸⁵⁹³¹ is an apocalyptic number.

485931 is a deficient number, since it is larger than the sum of its proper divisors (161981).

485931 is a wasteful number, since it uses less digits than its factorization.

485931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161980.

The product of its digits is 4320, while the sum is 30.

The square root of 485931 is about 697.0875124402. The cubic root of 485931 is about 78.6185208445.

The spelling of 485931 in words is "four hundred eighty-five thousand, nine hundred thirty-one".