100115443 has 2 divisors, whose sum is σ = 100115444. Its totient is φ = 100115442.

The previous prime is 100115413. The next prime is 100115459. The reversal of 100115443 is 344511001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100115443 - 2¹⁷ = 99984371 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100115443.

It is not a weakly prime, because it can be changed into another prime (100115413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50057721 + 50057722.

It is an arithmetic number, because the mean of its divisors is an integer number (50057722).

Almost surely, 2^100115443 is an apocalyptic number.

100115443 is a deficient number, since it is larger than the sum of its proper divisors (1).

100115443 is an equidigital number, since it uses as much as digits as its factorization.

100115443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 100115443 is about 10005.7704850751. The cubic root of 100115443 is about 464.3374276532.

Adding to 100115443 its reverse (344511001), we get a palindrome (444626444).

The spelling of 100115443 in words is "one hundred million, one hundred fifteen thousand, four hundred forty-three".