213265673 has 2 divisors, whose sum is σ = 213265674. Its totient is φ = 213265672.

The previous prime is 213265667. The next prime is 213265711. The reversal of 213265673 is 376562312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208889209 + 4376464 = 14453^2 + 2092^2 .

It is a cyclic number.

It is not a de Polignac number, because 213265673 - 2⁶ = 213265609 is a prime.

It is not a weakly prime, because it can be changed into another prime (213265643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106632836 + 106632837.

It is an arithmetic number, because the mean of its divisors is an integer number (106632837).

Almost surely, 2^213265673 is an apocalyptic number.

It is an amenable number.

213265673 is a deficient number, since it is larger than the sum of its proper divisors (1).

213265673 is an equidigital number, since it uses as much as digits as its factorization.

213265673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 35.

The square root of 213265673 is about 14603.6184899497. The cubic root of 213265673 is about 597.4574567493.

The spelling of 213265673 in words is "two hundred thirteen million, two hundred sixty-five thousand, six hundred seventy-three".