213238 has 4 divisors (see below), whose sum is σ = 319860. Its totient is φ = 106618.

The previous prime is 213229. The next prime is 213247. The reversal of 213238 is 832312.

It is a happy number.

213238 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (213229) and next prime (213247).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53308 + ... + 53311.

It is an arithmetic number, because the mean of its divisors is an integer number (79965).

2²¹³²³⁸ is an apocalyptic number.

213238 is a deficient number, since it is larger than the sum of its proper divisors (106622).

213238 is a wasteful number, since it uses less digits than its factorization.

213238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106621.

The product of its digits is 288, while the sum is 19.

The square root of 213238 is about 461.7770024590. Note that the first 3 decimals coincide. The cubic root of 213238 is about 59.7431613935.

The spelling of 213238 in words is "two hundred thirteen thousand, two hundred thirty-eight".