813212 has 12 divisors (see below), whose sum is σ = 1506960. Its totient is φ = 382656.

The previous prime is 813209. The next prime is 813217. The reversal of 813212 is 212318.

It is a super-2 number, since 2×813212² = 1322627513888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813217) 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, 5912 + ... + 6047.

It is an arithmetic number, because the mean of its divisors is an integer number (125580).

2⁸¹³²¹² is an apocalyptic number.

It is an amenable number.

813212 is a deficient number, since it is larger than the sum of its proper divisors (693748).

813212 is a wasteful number, since it uses less digits than its factorization.

813212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11980 (or 11978 counting only the distinct ones).

The product of its digits is 96, while the sum is 17.

The square root of 813212 is about 901.7826789199. The cubic root of 813212 is about 93.3400278645.

The spelling of 813212 in words is "eight hundred thirteen thousand, two hundred twelve".