423222031 has 2 divisors, whose sum is σ = 423222032. Its totient is φ = 423222030.

The previous prime is 423222029. The next prime is 423222047. The reversal of 423222031 is 130222324.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 423222031 - 2¹ = 423222029 is a prime.

It is a super-2 number, since 2×423222031² = 358233775047529922, which contains 22 as substring.

Together with 423222029, 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 (423222001) 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, 211611015 + 211611016.

It is an arithmetic number, because the mean of its divisors is an integer number (211611016).

Almost surely, 2^423222031 is an apocalyptic number.

423222031 is a deficient number, since it is larger than the sum of its proper divisors (1).

423222031 is an equidigital number, since it uses as much as digits as its factorization.

423222031 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 19.

The square root of 423222031 is about 20572.3608513948. The cubic root of 423222031 is about 750.7973925124.

Adding to 423222031 its reverse (130222324), we get a palindrome (553444355).

The spelling of 423222031 in words is "four hundred twenty-three million, two hundred twenty-two thousand, thirty-one".