1223443453 has 4 divisors (see below), whose sum is σ = 1232782848. Its totient is φ = 1214104060.

The previous prime is 1223443447. The next prime is 1223443499. The reversal of 1223443453 is 3543443221.

It is a happy number.

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 1223443453 - 2²⁵ = 1189889021 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 (1223443423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4669501 + ... + 4669762.

It is an arithmetic number, because the mean of its divisors is an integer number (308195712).

Almost surely, 2^1223443453 is an apocalyptic number.

It is an amenable number.

1223443453 is a deficient number, since it is larger than the sum of its proper divisors (9339395).

1223443453 is an equidigital number, since it uses as much as digits as its factorization.

1223443453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9339394.

The product of its digits is 34560, while the sum is 31.

The square root of 1223443453 is about 34977.7565461251. The cubic root of 1223443453 is about 1069.5340950635.

Adding to 1223443453 its reverse (3543443221), we get a palindrome (4766886674).

The spelling of 1223443453 in words is "one billion, two hundred twenty-three million, four hundred forty-three thousand, four hundred fifty-three".