423338081 has 2 divisors, whose sum is σ = 423338082. Its totient is φ = 423338080.

The previous prime is 423338059. The next prime is 423338087. The reversal of 423338081 is 180833324.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266211856 + 157126225 = 16316^2 + 12535^2 .

It is a cyclic number.

It is not a de Polignac number, because 423338081 - 2⁶ = 423338017 is a prime.

It is a super-2 number, since 2×423338081² = 358430261649525122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (423338087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211669040 + 211669041.

It is an arithmetic number, because the mean of its divisors is an integer number (211669041).

Almost surely, 2^423338081 is an apocalyptic number.

It is an amenable number.

423338081 is a deficient number, since it is larger than the sum of its proper divisors (1).

423338081 is an equidigital number, since it uses as much as digits as its factorization.

423338081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 423338081 is about 20575.1811899677. The cubic root of 423338081 is about 750.8660106122.

The spelling of 423338081 in words is "four hundred twenty-three million, three hundred thirty-eight thousand, eighty-one".