100403243 has 2 divisors, whose sum is σ = 100403244. Its totient is φ = 100403242.

The previous prime is 100403231. The next prime is 100403269. The reversal of 100403243 is 342304001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100403243 - 2⁶ = 100403179 is a prime.

It is a super-2 number, since 2×100403243² = 20161622409834098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100403213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50201621 + 50201622.

It is an arithmetic number, because the mean of its divisors is an integer number (50201622).

Almost surely, 2^100403243 is an apocalyptic number.

100403243 is a deficient number, since it is larger than the sum of its proper divisors (1).

100403243 is an equidigital number, since it uses as much as digits as its factorization.

100403243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 100403243 is about 10020.1418652632. The cubic root of 100403243 is about 464.7819426979.

Adding to 100403243 its reverse (342304001), we get a palindrome (442707244).

The spelling of 100403243 in words is "one hundred million, four hundred three thousand, two hundred forty-three".