1113041243 has 2 divisors, whose sum is σ = 1113041244. Its totient is φ = 1113041242.

The previous prime is 1113041239. The next prime is 1113041269. The reversal of 1113041243 is 3421403111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1113041243 - 2² = 1113041239 is a prime.

It is not a weakly prime, because it can be changed into another prime (1113041273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556520621 + 556520622.

It is an arithmetic number, because the mean of its divisors is an integer number (556520622).

Almost surely, 2^1113041243 is an apocalyptic number.

1113041243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113041243 is an equidigital number, since it uses as much as digits as its factorization.

1113041243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1113041243 is about 33362.2727493197. The cubic root of 1113041243 is about 1036.3435585693.

Adding to 1113041243 its reverse (3421403111), we get a palindrome (4534444354).

The spelling of 1113041243 in words is "one billion, one hundred thirteen million, forty-one thousand, two hundred forty-three".