100643411 has 4 divisors (see below), whose sum is σ = 109792824. Its totient is φ = 91494000.

The previous prime is 100643407. The next prime is 100643443. The reversal of 100643411 is 114346001.

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

It is a cyclic number.

It is not a de Polignac number, because 100643411 - 2² = 100643407 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100603411) 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, 4574690 + ... + 4574711.

It is an arithmetic number, because the mean of its divisors is an integer number (27448206).

Almost surely, 2^100643411 is an apocalyptic number.

100643411 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100643411 is the 4487-th centered decagonal number.

100643411 is a deficient number, since it is larger than the sum of its proper divisors (9149413).

100643411 is an equidigital number, since it uses as much as digits as its factorization.

100643411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9149412.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 100643411 is about 10032.1189685928. The cubic root of 100643411 is about 465.1522390487.

Adding to 100643411 its reverse (114346001), we get a palindrome (214989412).

The spelling of 100643411 in words is "one hundred million, six hundred forty-three thousand, four hundred eleven".