1123341243 has 4 divisors (see below), whose sum is σ = 1497788328. Its totient is φ = 748894160.

The previous prime is 1123341223. The next prime is 1123341251. The reversal of 1123341243 is 3421433211.

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-1123341243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1123341223) 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, 187223538 + ... + 187223543.

It is an arithmetic number, because the mean of its divisors is an integer number (374447082).

Almost surely, 2^1123341243 is an apocalyptic number.

1123341243 is a deficient number, since it is larger than the sum of its proper divisors (374447085).

1123341243 is an equidigital number, since it uses as much as digits as its factorization.

1123341243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374447084.

The product of its digits is 1728, while the sum is 24.

The square root of 1123341243 is about 33516.2832515779. The cubic root of 1123341243 is about 1039.5304965949.

Adding to 1123341243 its reverse (3421433211), we get a palindrome (4544774454).

The spelling of 1123341243 in words is "one billion, one hundred twenty-three million, three hundred forty-one thousand, two hundred forty-three".