213551288273 has 2 divisors, whose sum is σ = 213551288274. Its totient is φ = 213551288272.

The previous prime is 213551288231. The next prime is 213551288297. The reversal of 213551288273 is 372882155312.

213551288273 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109897554064 + 103653734209 = 331508^2 + 321953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213551288273 is a prime.

It is not a weakly prime, because it can be changed into another prime (213551228273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106775644136 + 106775644137.

It is an arithmetic number, because the mean of its divisors is an integer number (106775644137).

Almost surely, 2^213551288273 is an apocalyptic number.

It is an amenable number.

213551288273 is a deficient number, since it is larger than the sum of its proper divisors (1).

213551288273 is an equidigital number, since it uses as much as digits as its factorization.

213551288273 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 806400, while the sum is 47.

The spelling of 213551288273 in words is "two hundred thirteen billion, five hundred fifty-one million, two hundred eighty-eight thousand, two hundred seventy-three".