115212243 has 4 divisors (see below), whose sum is σ = 153616328. Its totient is φ = 76808160.

The previous prime is 115212233. The next prime is 115212269. The reversal of 115212243 is 342212511.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 115212243 - 2⁹ = 115211731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (115212233) 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, 19202038 + ... + 19202043.

It is an arithmetic number, because the mean of its divisors is an integer number (38404082).

Almost surely, 2^115212243 is an apocalyptic number.

115212243 is a deficient number, since it is larger than the sum of its proper divisors (38404085).

115212243 is an equidigital number, since it uses as much as digits as its factorization.

115212243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38404084.

The product of its digits is 480, while the sum is 21.

The square root of 115212243 is about 10733.6966139350. The cubic root of 115212243 is about 486.5933961647.

Adding to 115212243 its reverse (342212511), we get a palindrome (457424754).

The spelling of 115212243 in words is "one hundred fifteen million, two hundred twelve thousand, two hundred forty-three".