308212 has 12 divisors (see below), whose sum is σ = 558180. Its totient is φ = 148736.

The previous prime is 308153. The next prime is 308213. The reversal of 308212 is 212803.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 181476 + 126736 = 426^2 + 356^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308213) by changing a digit.

308212 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1213 + ... + 1444.

It is an arithmetic number, because the mean of its divisors is an integer number (46515).

2³⁰⁸²¹² is an apocalyptic number.

It is an amenable number.

308212 is a deficient number, since it is larger than the sum of its proper divisors (249968).

308212 is a wasteful number, since it uses less digits than its factorization.

308212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2690 (or 2688 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 308212 is about 555.1684429072. The cubic root of 308212 is about 67.5486252285.

The spelling of 308212 in words is "three hundred eight thousand, two hundred twelve".