1230403243 has 4 divisors (see below), whose sum is σ = 1230478048. Its totient is φ = 1230328440.

The previous prime is 1230403241. The next prime is 1230403261. The reversal of 1230403243 is 3423040321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1230403243 - 2¹ = 1230403241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230403241) 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, 771 + ... + 49612.

It is an arithmetic number, because the mean of its divisors is an integer number (307619512).

Almost surely, 2^1230403243 is an apocalyptic number.

1230403243 is a deficient number, since it is larger than the sum of its proper divisors (74805).

1230403243 is an equidigital number, since it uses as much as digits as its factorization.

1230403243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74804.

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

The square root of 1230403243 is about 35077.1042561954. The cubic root of 1230403243 is about 1071.5583439417.

Adding to 1230403243 its reverse (3423040321), we get a palindrome (4653443564).

The spelling of 1230403243 in words is "one billion, two hundred thirty million, four hundred three thousand, two hundred forty-three".