321340212 has 36 divisors (see below), whose sum is σ = 812972160. Its totient is φ = 107021712.

The previous prime is 321340193. The next prime is 321340223. The reversal of 321340212 is 212043123.

321340212 is a `hidden beast` number, since 321 + 340 + 2 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48703 + ... + 54905.

It is an arithmetic number, because the mean of its divisors is an integer number (22582560).

Almost surely, 2^321340212 is an apocalyptic number.

It is an amenable number.

321340212 is an abundant number, since it is smaller than the sum of its proper divisors (491631948).

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

321340212 is a wasteful number, since it uses less digits than its factorization.

321340212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7652 (or 7647 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 321340212 is about 17925.9647439127. The cubic root of 321340212 is about 684.9439363071.

Adding to 321340212 its reverse (212043123), we get a palindrome (533383335).

The spelling of 321340212 in words is "three hundred twenty-one million, three hundred forty thousand, two hundred twelve".