8311212 has 144 divisors (see below), whose sum is σ = 26906880. Its totient is φ = 2104704.

The previous prime is 8311201. The next prime is 8311217. The reversal of 8311212 is 2121138.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8311217) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140839 + ... + 140897.

Almost surely, 2^8311212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8311212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13453440).

8311212 is an abundant number, since it is smaller than the sum of its proper divisors (18595668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8311212 is a wasteful number, since it uses less digits than its factorization.

8311212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132 (or 127 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 8311212 is about 2882.9172724863. The cubic root of 8311212 is about 202.5605123225.

The spelling of 8311212 in words is "eight million, three hundred eleven thousand, two hundred twelve".