100820803 has 2 divisors, whose sum is σ = 100820804. Its totient is φ = 100820802.

The previous prime is 100820779. The next prime is 100820807. The reversal of 100820803 is 308028001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100820803 - 2⁵ = 100820771 is a prime.

It is not a weakly prime, because it can be changed into another prime (100820807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50410401 + 50410402.

It is an arithmetic number, because the mean of its divisors is an integer number (50410402).

Almost surely, 2^100820803 is an apocalyptic number.

100820803 is a deficient number, since it is larger than the sum of its proper divisors (1).

100820803 is an equidigital number, since it uses as much as digits as its factorization.

100820803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 100820803 is about 10040.9562791599. The cubic root of 100820803 is about 465.4253678880.

Adding to 100820803 its reverse (308028001), we get a palindrome (408848804).

The spelling of 100820803 in words is "one hundred million, eight hundred twenty thousand, eight hundred three".