100305811 has 2 divisors, whose sum is σ = 100305812. Its totient is φ = 100305810.

The previous prime is 100305791. The next prime is 100305817. The reversal of 100305811 is 118503001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100305811 - 2⁹ = 100305299 is a prime.

It is a super-2 number, since 2×100305811² = 20122511440735442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100305817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50152905 + 50152906.

It is an arithmetic number, because the mean of its divisors is an integer number (50152906).

Almost surely, 2^100305811 is an apocalyptic number.

100305811 is a deficient number, since it is larger than the sum of its proper divisors (1).

100305811 is an equidigital number, since it uses as much as digits as its factorization.

100305811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 100305811 is about 10015.2788777947. The cubic root of 100305811 is about 464.6315515054.

Adding to 100305811 its reverse (118503001), we get a palindrome (218808812).

The spelling of 100305811 in words is "one hundred million, three hundred five thousand, eight hundred eleven".