213238573 has 8 divisors (see below), whose sum is σ = 215711640. Its totient is φ = 210772800.

The previous prime is 213238549. The next prime is 213238601. The reversal of 213238573 is 375832312.

It can be written as a sum of positive squares in 4 ways, for example, as 111894084 + 101344489 = 10578^2 + 10067^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213238573 - 2⁵ = 213238541 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 (213238523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75063 + ... + 77851.

It is an arithmetic number, because the mean of its divisors is an integer number (26963955).

Almost surely, 2^213238573 is an apocalyptic number.

It is an amenable number.

213238573 is a deficient number, since it is larger than the sum of its proper divisors (2473067).

213238573 is a wasteful number, since it uses less digits than its factorization.

213238573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3647.

The product of its digits is 30240, while the sum is 34.

The square root of 213238573 is about 14602.6906082407. The cubic root of 213238573 is about 597.4321490619.

The spelling of 213238573 in words is "two hundred thirteen million, two hundred thirty-eight thousand, five hundred seventy-three".