287873101 has 2 divisors, whose sum is σ = 287873102. Its totient is φ = 287873100.

The previous prime is 287873063. The next prime is 287873119. The reversal of 287873101 is 101378782.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280529001 + 7344100 = 16749^2 + 2710^2 .

It is a cyclic number.

It is not a de Polignac number, because 287873101 - 2⁷ = 287872973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (287873171) 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, 143936550 + 143936551.

It is an arithmetic number, because the mean of its divisors is an integer number (143936551).

Almost surely, 2^287873101 is an apocalyptic number.

It is an amenable number.

287873101 is a deficient number, since it is larger than the sum of its proper divisors (1).

287873101 is an equidigital number, since it uses as much as digits as its factorization.

287873101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 287873101 is about 16966.8235388950. The cubic root of 287873101 is about 660.2884421811.

The spelling of 287873101 in words is "two hundred eighty-seven million, eight hundred seventy-three thousand, one hundred one".