423013501 has 2 divisors, whose sum is σ = 423013502. Its totient is φ = 423013500.

The previous prime is 423013469. The next prime is 423013559. The reversal of 423013501 is 105310324.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 420291001 + 2722500 = 20501^2 + 1650^2 .

It is a cyclic number.

It is not a de Polignac number, because 423013501 - 2⁵ = 423013469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (423013571) 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, 211506750 + 211506751.

It is an arithmetic number, because the mean of its divisors is an integer number (211506751).

Almost surely, 2^423013501 is an apocalyptic number.

It is an amenable number.

423013501 is a deficient number, since it is larger than the sum of its proper divisors (1).

423013501 is an equidigital number, since it uses as much as digits as its factorization.

423013501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 423013501 is about 20567.2920191259. The cubic root of 423013501 is about 750.6740612663.

Adding to 423013501 its reverse (105310324), we get a palindrome (528323825).

The spelling of 423013501 in words is "four hundred twenty-three million, thirteen thousand, five hundred one".