442310213 has 2 divisors, whose sum is σ = 442310214. Its totient is φ = 442310212.

The previous prime is 442310189. The next prime is 442310221. The reversal of 442310213 is 312013244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 414611044 + 27699169 = 20362^2 + 5263^2 .

It is a cyclic number.

It is not a de Polignac number, because 442310213 - 2⁶ = 442310149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442310273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221155106 + 221155107.

It is an arithmetic number, because the mean of its divisors is an integer number (221155107).

Almost surely, 2^442310213 is an apocalyptic number.

It is an amenable number.

442310213 is a deficient number, since it is larger than the sum of its proper divisors (1).

442310213 is an equidigital number, since it uses as much as digits as its factorization.

442310213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 442310213 is about 21031.1724114468. The cubic root of 442310213 is about 761.9193252792.

Adding to 442310213 its reverse (312013244), we get a palindrome (754323457).

The spelling of 442310213 in words is "four hundred forty-two million, three hundred ten thousand, two hundred thirteen".