423123442303 has 4 divisors (see below), whose sum is σ = 423139740408. Its totient is φ = 423107144200.

The previous prime is 423123442289. The next prime is 423123442349. The reversal of 423123442303 is 303244321324.

It is a happy number.

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-423123442303 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423123442373) 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, 8110048 + ... + 8162053.

It is an arithmetic number, because the mean of its divisors is an integer number (105784935102).

Almost surely, 2^423123442303 is an apocalyptic number.

423123442303 is a deficient number, since it is larger than the sum of its proper divisors (16298105).

423123442303 is a wasteful number, since it uses less digits than its factorization.

423123442303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16298104.

The product of its (nonzero) digits is 41472, while the sum is 31.

Adding to 423123442303 its reverse (303244321324), we get a palindrome (726367763627).

The spelling of 423123442303 in words is "four hundred twenty-three billion, one hundred twenty-three million, four hundred forty-two thousand, three hundred three".