423305505 has 48 divisors (see below), whose sum is σ = 840088704. Its totient is φ = 193155840.

The previous prime is 423305473. The next prime is 423305537. The reversal of 423305505 is 505503324.

It is an interprime number because it is at equal distance from previous prime (423305473) and next prime (423305537).

It is not a de Polignac number, because 423305505 - 2⁵ = 423305473 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 254637 + ... + 256293.

It is an arithmetic number, because the mean of its divisors is an integer number (17501848).

Almost surely, 2^423305505 is an apocalyptic number.

423305505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

423305505 is a deficient number, since it is larger than the sum of its proper divisors (416783199).

423305505 is a wasteful number, since it uses less digits than its factorization.

423305505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486 (or 2483 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 423305505 is about 20574.3895413691. The cubic root of 423305505 is about 750.8467503254.

Adding to 423305505 its reverse (505503324), we get a palindrome (928808829).

The spelling of 423305505 in words is "four hundred twenty-three million, three hundred five thousand, five hundred five".