321034213 has 2 divisors, whose sum is σ = 321034214. Its totient is φ = 321034212.

The previous prime is 321034201. The next prime is 321034247. The reversal of 321034213 is 312430123.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 278823204 + 42211009 = 16698^2 + 6497^2 .

It is an emirp because it is prime and its reverse (312430123) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 321034213 - 2²¹ = 318937061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321034513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160517106 + 160517107.

It is an arithmetic number, because the mean of its divisors is an integer number (160517107).

Almost surely, 2^321034213 is an apocalyptic number.

It is an amenable number.

321034213 is a deficient number, since it is larger than the sum of its proper divisors (1).

321034213 is an equidigital number, since it uses as much as digits as its factorization.

321034213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 321034213 is about 17917.4276334523. The cubic root of 321034213 is about 684.7264526603.

Adding to 321034213 its reverse (312430123), we get a palindrome (633464336).

The spelling of 321034213 in words is "three hundred twenty-one million, thirty-four thousand, two hundred thirteen".