213209093 has 4 divisors (see below), whose sum is σ = 218167488. Its totient is φ = 208250700.

The previous prime is 213209063. The next prime is 213209107. The reversal of 213209093 is 390902312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213209093 - 2¹⁴ = 213192709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213209033) 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 in 3 ways as a sum of consecutive naturals, for example, 2479133 + ... + 2479218.

It is an arithmetic number, because the mean of its divisors is an integer number (54541872).

Almost surely, 2^213209093 is an apocalyptic number.

It is an amenable number.

213209093 is a deficient number, since it is larger than the sum of its proper divisors (4958395).

213209093 is an equidigital number, since it uses as much as digits as its factorization.

213209093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4958394.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 213209093 is about 14601.6811703310. The cubic root of 213209093 is about 597.4046163455.

The spelling of 213209093 in words is "two hundred thirteen million, two hundred nine thousand, ninety-three".