163435423 has 2 divisors, whose sum is σ = 163435424. Its totient is φ = 163435422.

The previous prime is 163435421. The next prime is 163435439. The reversal of 163435423 is 324534361.

It is a weak prime.

It is an emirp because it is prime and its reverse (324534361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163435423 - 2¹ = 163435421 is a prime.

It is a super-2 number, since 2×163435423² = 53422274982377858, which contains 22 as substring.

Together with 163435421, 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 (163435421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81717711 + 81717712.

It is an arithmetic number, because the mean of its divisors is an integer number (81717712).

Almost surely, 2^163435423 is an apocalyptic number.

163435423 is a deficient number, since it is larger than the sum of its proper divisors (1).

163435423 is an equidigital number, since it uses as much as digits as its factorization.

163435423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 31.

The square root of 163435423 is about 12784.1864426329. The cubic root of 163435423 is about 546.7415300425.

Adding to 163435423 its reverse (324534361), we get a palindrome (487969784).

The spelling of 163435423 in words is "one hundred sixty-three million, four hundred thirty-five thousand, four hundred twenty-three".