320348213 has 2 divisors, whose sum is σ = 320348214. Its totient is φ = 320348212.

The previous prime is 320348207. The next prime is 320348233. The reversal of 320348213 is 312843023.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232776049 + 87572164 = 15257^2 + 9358^2 .

It is a cyclic number.

It is not a de Polignac number, because 320348213 - 2²⁰ = 319299637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320348233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160174106 + 160174107.

It is an arithmetic number, because the mean of its divisors is an integer number (160174107).

Almost surely, 2^320348213 is an apocalyptic number.

It is an amenable number.

320348213 is a deficient number, since it is larger than the sum of its proper divisors (1).

320348213 is an equidigital number, since it uses as much as digits as its factorization.

320348213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 320348213 is about 17898.2740229330. The cubic root of 320348213 is about 684.2383870070.

The spelling of 320348213 in words is "three hundred twenty million, three hundred forty-eight thousand, two hundred thirteen".