213237 has 24 divisors (see below), whose sum is σ = 343200. Its totient is φ = 127008.

The previous prime is 213229. The next prime is 213247. The reversal of 213237 is 732312.

213237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213237 - 2³ = 213229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4938 + ... + 4980.

It is an arithmetic number, because the mean of its divisors is an integer number (14300).

2²¹³²³⁷ is an apocalyptic number.

It is an amenable number.

213237 is a deficient number, since it is larger than the sum of its proper divisors (129963).

213237 is a wasteful number, since it uses less digits than its factorization.

213237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97 (or 94 counting only the distinct ones).

The product of its digits is 252, while the sum is 18.

The square root of 213237 is about 461.7759196840. The cubic root of 213237 is about 59.7430680030.

Adding to 213237 its reverse (732312), we get a palindrome (945549).

The spelling of 213237 in words is "two hundred thirteen thousand, two hundred thirty-seven".