422331523 has 4 divisors (see below), whose sum is σ = 423256120. Its totient is φ = 421406928.

The previous prime is 422331517. The next prime is 422331557. The reversal of 422331523 is 325133224.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 422331523 - 2⁵ = 422331491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422331583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461613 + ... + 462526.

It is an arithmetic number, because the mean of its divisors is an integer number (105814030).

Almost surely, 2^422331523 is an apocalyptic number.

422331523 is a deficient number, since it is larger than the sum of its proper divisors (924597).

422331523 is an equidigital number, since it uses as much as digits as its factorization.

422331523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924596.

The product of its digits is 4320, while the sum is 25.

The square root of 422331523 is about 20550.7061435854. The cubic root of 422331523 is about 750.2704346232.

Adding to 422331523 its reverse (325133224), we get a palindrome (747464747).

The spelling of 422331523 in words is "four hundred twenty-two million, three hundred thirty-one thousand, five hundred twenty-three".