800931 has 4 divisors (see below), whose sum is σ = 1067912. Its totient is φ = 533952.

The previous prime is 800923. The next prime is 800953. The reversal of 800931 is 139008.

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

It is not a de Polignac number, because 800931 - 2³ = 800923 is a prime.

It is a super-2 number, since 2×800931² = 1282980933522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 800898 and 800907.

It is not an unprimeable number, because it can be changed into a prime (800971) 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, 133486 + ... + 133491.

It is an arithmetic number, because the mean of its divisors is an integer number (266978).

2⁸⁰⁰⁹³¹ is an apocalyptic number.

800931 is a deficient number, since it is larger than the sum of its proper divisors (266981).

800931 is a wasteful number, since it uses less digits than its factorization.

800931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266980.

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 800931 is about 894.9474844928. The cubic root of 800931 is about 92.8677737054.

Adding to 800931 its reverse (139008), we get a palindrome (939939).

The spelling of 800931 in words is "eight hundred thousand, nine hundred thirty-one".