423193501 has 2 divisors, whose sum is σ = 423193502. Its totient is φ = 423193500.

The previous prime is 423193471. The next prime is 423193559. The reversal of 423193501 is 105391324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 292068100 + 131125401 = 17090^2 + 11451^2 .

It is a cyclic number.

It is not a de Polignac number, because 423193501 - 2²¹ = 421096349 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 423193501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423193571) 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, 211596750 + 211596751.

It is an arithmetic number, because the mean of its divisors is an integer number (211596751).

Almost surely, 2^423193501 is an apocalyptic number.

It is an amenable number.

423193501 is a deficient number, since it is larger than the sum of its proper divisors (1).

423193501 is an equidigital number, since it uses as much as digits as its factorization.

423193501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 423193501 is about 20571.6674336331. The cubic root of 423193501 is about 750.7805213594.

The spelling of 423193501 in words is "four hundred twenty-three million, one hundred ninety-three thousand, five hundred one".