213805238 has 8 divisors (see below), whose sum is σ = 321753432. Its totient is φ = 106554096.

The previous prime is 213805187. The next prime is 213805289. The reversal of 213805238 is 832508312.

It is an interprime number because it is at equal distance from previous prime (213805187) and next prime (213805289).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173495 + ... + 174722.

It is an arithmetic number, because the mean of its divisors is an integer number (40219179).

Almost surely, 2^213805238 is an apocalyptic number.

213805238 is a deficient number, since it is larger than the sum of its proper divisors (107948194).

213805238 is a wasteful number, since it uses less digits than its factorization.

213805238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348526.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 213805238 is about 14622.0804949227. The cubic root of 213805238 is about 597.9608908701.

The spelling of 213805238 in words is "two hundred thirteen million, eight hundred five thousand, two hundred thirty-eight".