100003243 has 2 divisors, whose sum is σ = 100003244. Its totient is φ = 100003242.

The previous prime is 100003219. The next prime is 100003247. The reversal of 100003243 is 342300001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100003243 is a prime.

It is a super-2 number, since 2×100003243² = 20001297221034098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100003247) 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, 50001621 + 50001622.

It is an arithmetic number, because the mean of its divisors is an integer number (50001622).

Almost surely, 2^100003243 is an apocalyptic number.

100003243 is a deficient number, since it is larger than the sum of its proper divisors (1).

100003243 is an equidigital number, since it uses as much as digits as its factorization.

100003243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 100003243 is about 10000.1621486854. The cubic root of 100003243 is about 464.1639008646.

Adding to 100003243 its reverse (342300001), we get a palindrome (442303244).

The spelling of 100003243 in words is "one hundred million, three thousand, two hundred forty-three".