423103561 has 4 divisors (see below), whose sum is σ = 441499392. Its totient is φ = 404707732.

The previous prime is 423103543. The next prime is 423103567. The reversal of 423103561 is 165301324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 423103561 - 2⁹ = 423103049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423103567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9197881 + ... + 9197926.

It is an arithmetic number, because the mean of its divisors is an integer number (110374848).

Almost surely, 2^423103561 is an apocalyptic number.

It is an amenable number.

423103561 is a deficient number, since it is larger than the sum of its proper divisors (18395831).

423103561 is a wasteful number, since it uses less digits than its factorization.

423103561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18395830.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 423103561 is about 20569.4813011899. The cubic root of 423103561 is about 750.7273305738.

Adding to 423103561 its reverse (165301324), we get a palindrome (588404885).

The spelling of 423103561 in words is "four hundred twenty-three million, one hundred three thousand, five hundred sixty-one".