101728811 has 2 divisors, whose sum is σ = 101728812. Its totient is φ = 101728810.

The previous prime is 101728801. The next prime is 101728813. The reversal of 101728811 is 118827101.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 101728811 - 2¹⁴ = 101712427 is a prime.

Together with 101728813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (101728813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50864405 + 50864406.

It is an arithmetic number, because the mean of its divisors is an integer number (50864406).

Almost surely, 2^101728811 is an apocalyptic number.

101728811 is a deficient number, since it is larger than the sum of its proper divisors (1).

101728811 is an equidigital number, since it uses as much as digits as its factorization.

101728811 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 896, while the sum is 29.

The square root of 101728811 is about 10086.0701464941. The cubic root of 101728811 is about 466.8184255297.

The spelling of 101728811 in words is "one hundred one million, seven hundred twenty-eight thousand, eight hundred eleven".