812013 has 8 divisors (see below), whose sum is σ = 1103328. Its totient is φ = 531024.

The previous prime is 812011. The next prime is 812033. The reversal of 812013 is 310218.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 812013 - 2¹ = 812011 is a prime.

It is a super-2 number, since 2×812013² = 1318730224338, which contains 22 as substring.

812013 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 811983 and 812001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2395 + ... + 2712.

It is an arithmetic number, because the mean of its divisors is an integer number (137916).

2⁸¹²⁰¹³ is an apocalyptic number.

It is an amenable number.

812013 is a deficient number, since it is larger than the sum of its proper divisors (291315).

812013 is a wasteful number, since it uses less digits than its factorization.

812013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5163.

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

The square root of 812013 is about 901.1176393790. The cubic root of 812013 is about 93.2941317796.

It can be divided in two parts, 8 and 12013, that added together give a palindrome (12021).

The spelling of 812013 in words is "eight hundred twelve thousand, thirteen".