442240212313 has 2 divisors, whose sum is σ = 442240212314. Its totient is φ = 442240212312.

The previous prime is 442240212289. The next prime is 442240212353. The reversal of 442240212313 is 313212042244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 419278265289 + 22961947024 = 647517^2 + 151532^2 .

It is a cyclic number.

It is not a de Polignac number, because 442240212313 - 2⁹ = 442240211801 is a prime.

It is not a weakly prime, because it can be changed into another prime (442240212353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221120106156 + 221120106157.

It is an arithmetic number, because the mean of its divisors is an integer number (221120106157).

Almost surely, 2^442240212313 is an apocalyptic number.

It is an amenable number.

442240212313 is a deficient number, since it is larger than the sum of its proper divisors (1).

442240212313 is an equidigital number, since it uses as much as digits as its factorization.

442240212313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 442240212313 its reverse (313212042244), we get a palindrome (755452254557).

The spelling of 442240212313 in words is "four hundred forty-two billion, two hundred forty million, two hundred twelve thousand, three hundred thirteen".