115311443 has 8 divisors (see below), whose sum is σ = 129581088. Its totient is φ = 101813184.

The previous prime is 115311433. The next prime is 115311451. The reversal of 115311443 is 344113511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 115311443 - 2¹⁸ = 115049299 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (115311433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192530 + ... + 193127.

It is an arithmetic number, because the mean of its divisors is an integer number (16197636).

Almost surely, 2^115311443 is an apocalyptic number.

115311443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

115311443 is a deficient number, since it is larger than the sum of its proper divisors (14269645).

115311443 is a wasteful number, since it uses less digits than its factorization.

115311443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385693.

The product of its digits is 720, while the sum is 23.

The square root of 115311443 is about 10738.3165812896. The cubic root of 115311443 is about 486.7330115865.

Adding to 115311443 its reverse (344113511), we get a palindrome (459424954).

The spelling of 115311443 in words is "one hundred fifteen million, three hundred eleven thousand, four hundred forty-three".