115213247 has 2 divisors, whose sum is σ = 115213248. Its totient is φ = 115213246.

The previous prime is 115213243. The next prime is 115213277. The reversal of 115213247 is 742312511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 115213247 - 2² = 115213243 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115213243) 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, 57606623 + 57606624.

It is an arithmetic number, because the mean of its divisors is an integer number (57606624).

Almost surely, 2^115213247 is an apocalyptic number.

115213247 is a deficient number, since it is larger than the sum of its proper divisors (1).

115213247 is an equidigital number, since it uses as much as digits as its factorization.

115213247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1680, while the sum is 26.

The square root of 115213247 is about 10733.7433824365. The cubic root of 115213247 is about 486.5948096092.

Adding to 115213247 its reverse (742312511), we get a palindrome (857525758).

The spelling of 115213247 in words is "one hundred fifteen million, two hundred thirteen thousand, two hundred forty-seven".