213505233 has 8 divisors (see below), whose sum is σ = 284744928. Its totient is φ = 142301184.

The previous prime is 213505231. The next prime is 213505289. The reversal of 213505233 is 332505312.

It is a happy number.

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

It is not a de Polignac number, because 213505233 - 2¹ = 213505231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213505231) 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, 12241 + ... + 24017.

It is an arithmetic number, because the mean of its divisors is an integer number (35593116).

Almost surely, 2^213505233 is an apocalyptic number.

It is an amenable number.

213505233 is a deficient number, since it is larger than the sum of its proper divisors (71239695).

213505233 is a wasteful number, since it uses less digits than its factorization.

213505233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17823.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 213505233 is about 14611.8182646788. The cubic root of 213505233 is about 597.6810797833.

The spelling of 213505233 in words is "two hundred thirteen million, five hundred five thousand, two hundred thirty-three".