422343613 has 2 divisors, whose sum is σ = 422343614. Its totient is φ = 422343612.

The previous prime is 422343611. The next prime is 422343667. The reversal of 422343613 is 316343224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 407918809 + 14424804 = 20197^2 + 3798^2 .

It is a cyclic number.

It is not a de Polignac number, because 422343613 - 2¹ = 422343611 is a prime.

Together with 422343611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422343611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211171806 + 211171807.

It is an arithmetic number, because the mean of its divisors is an integer number (211171807).

Almost surely, 2^422343613 is an apocalyptic number.

It is an amenable number.

422343613 is a deficient number, since it is larger than the sum of its proper divisors (1).

422343613 is an equidigital number, since it uses as much as digits as its factorization.

422343613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 28.

The square root of 422343613 is about 20551.0002919566. Note that the first 3 decimals coincide. The cubic root of 422343613 is about 750.2775938355.

Adding to 422343613 its reverse (316343224), we get a palindrome (738686837).

It can be divided in two parts, 422 and 343613, that added together give a triangular number (344035 = T₈₂₉).

The spelling of 422343613 in words is "four hundred twenty-two million, three hundred forty-three thousand, six hundred thirteen".