423121030223 has 4 divisors (see below), whose sum is σ = 423125659488. Its totient is φ = 423116400960.

The previous prime is 423121030193. The next prime is 423121030243. The reversal of 423121030223 is 322030121324.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-423121030223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423121030243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2174711 + ... + 2361272.

It is an arithmetic number, because the mean of its divisors is an integer number (105781414872).

Almost surely, 2^423121030223 is an apocalyptic number.

423121030223 is a deficient number, since it is larger than the sum of its proper divisors (4629265).

423121030223 is an equidigital number, since it uses as much as digits as its factorization.

423121030223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4629264.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 423121030223 its reverse (322030121324), we get a palindrome (745151151547).

The spelling of 423121030223 in words is "four hundred twenty-three billion, one hundred twenty-one million, thirty thousand, two hundred twenty-three".