1223403043 has 4 divisors (see below), whose sum is σ = 1226869128. Its totient is φ = 1219936960.

The previous prime is 1223403023. The next prime is 1223403047. The reversal of 1223403043 is 3403043221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3403043221 = 17 ⋅200179013.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223403043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223403047) 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, 1732513 + ... + 1733218.

It is an arithmetic number, because the mean of its divisors is an integer number (306717282).

Almost surely, 2^1223403043 is an apocalyptic number.

1223403043 is a deficient number, since it is larger than the sum of its proper divisors (3466085).

1223403043 is an equidigital number, since it uses as much as digits as its factorization.

1223403043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3466084.

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 1223403043 is about 34977.1788885267. The cubic root of 1223403043 is about 1069.5223194618.

Adding to 1223403043 its reverse (3403043221), we get a palindrome (4626446264).

The spelling of 1223403043 in words is "one billion, two hundred twenty-three million, four hundred three thousand, forty-three".