812031 has 12 divisors (see below), whose sum is σ = 1190616. Its totient is φ = 491920.

The previous prime is 812011. The next prime is 812033. The reversal of 812031 is 130218.

It is a happy number.

It is not a de Polignac number, because 812031 - 2⁹ = 811519 is a prime.

It is a super-2 number, since 2×812031² = 1318788689922, which contains 22 as substring.

It is a plaindrome in base 13.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 812031.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 812031.

It is not an unprimeable number, because it can be changed into a prime (812033) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 756 + ... + 1481.

It is an arithmetic number, because the mean of its divisors is an integer number (99218).

2⁸¹²⁰³¹ is an apocalyptic number.

812031 is a deficient number, since it is larger than the sum of its proper divisors (378585).

812031 is a wasteful number, since it uses less digits than its factorization.

812031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2262 (or 2251 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 812031 is about 901.1276269208. The cubic root of 812031 is about 93.2948211290.

Adding to 812031 its reverse (130218), we get a palindrome (942249).

It can be divided in two parts, 81 and 2031, that added together give a palindrome (2112).

The spelling of 812031 in words is "eight hundred twelve thousand, thirty-one".