1115243023 has 2 divisors, whose sum is σ = 1115243024. Its totient is φ = 1115243022.

The previous prime is 1115242987. The next prime is 1115243033. The reversal of 1115243023 is 3203425111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1115243023 - 2¹³ = 1115234831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1115242985 and 1115243003.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115243033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557621511 + 557621512.

It is an arithmetic number, because the mean of its divisors is an integer number (557621512).

Almost surely, 2^1115243023 is an apocalyptic number.

1115243023 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115243023 is an equidigital number, since it uses as much as digits as its factorization.

1115243023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1115243023 is about 33395.2544982068. The cubic root of 1115243023 is about 1037.0264615593.

Adding to 1115243023 its reverse (3203425111), we get a palindrome (4318668134).

The spelling of 1115243023 in words is "one billion, one hundred fifteen million, two hundred forty-three thousand, twenty-three".