1223453423 has 4 divisors (see below), whose sum is σ = 1223811600. Its totient is φ = 1223095248.

The previous prime is 1223453417. The next prime is 1223453443. The reversal of 1223453423 is 3243543221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1223453423 - 2⁸ = 1223453167 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 (1223453443) 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, 173915 + ... + 180812.

It is an arithmetic number, because the mean of its divisors is an integer number (305952900).

Almost surely, 2^1223453423 is an apocalyptic number.

1223453423 is a deficient number, since it is larger than the sum of its proper divisors (358177).

1223453423 is an equidigital number, since it uses as much as digits as its factorization.

1223453423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358176.

The product of its digits is 17280, while the sum is 29.

The square root of 1223453423 is about 34977.8990649810. The cubic root of 1223453423 is about 1069.5370003132.

Adding to 1223453423 its reverse (3243543221), we get a palindrome (4466996644).

The spelling of 1223453423 in words is "one billion, two hundred twenty-three million, four hundred fifty-three thousand, four hundred twenty-three".