115331243 has 2 divisors, whose sum is σ = 115331244. Its totient is φ = 115331242.

The previous prime is 115331207. The next prime is 115331261. The reversal of 115331243 is 342133511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 115331243 - 2¹⁶ = 115265707 is a prime.

It is a super-2 number, since 2×115331243² = 26602591223850098, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (115331143) 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 as a sum of consecutive naturals, namely, 57665621 + 57665622.

It is an arithmetic number, because the mean of its divisors is an integer number (57665622).

Almost surely, 2^115331243 is an apocalyptic number.

115331243 is a deficient number, since it is larger than the sum of its proper divisors (1).

115331243 is an equidigital number, since it uses as much as digits as its factorization.

115331243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080, while the sum is 23.

The square root of 115331243 is about 10739.2384739329. The cubic root of 115331243 is about 486.7608687873.

Adding to 115331243 its reverse (342133511), we get a palindrome (457464754).

The spelling of 115331243 in words is "one hundred fifteen million, three hundred thirty-one thousand, two hundred forty-three".