100723289 has 2 divisors, whose sum is σ = 100723290. Its totient is φ = 100723288.

The previous prime is 100723219. The next prime is 100723297. The reversal of 100723289 is 982327001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50879689 + 49843600 = 7133^2 + 7060^2 .

It is a cyclic number.

It is not a de Polignac number, because 100723289 - 2²⁰ = 99674713 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (100723219) 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, 50361644 + 50361645.

It is an arithmetic number, because the mean of its divisors is an integer number (50361645).

Almost surely, 2^100723289 is an apocalyptic number.

It is an amenable number.

100723289 is a deficient number, since it is larger than the sum of its proper divisors (1).

100723289 is an equidigital number, since it uses as much as digits as its factorization.

100723289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 100723289 is about 10036.0992920557. The cubic root of 100723289 is about 465.2752661625.

The spelling of 100723289 in words is "one hundred million, seven hundred twenty-three thousand, two hundred eighty-nine".