237213 has 6 divisors (see below), whose sum is σ = 342654. Its totient is φ = 158136.

The previous prime is 237203. The next prime is 237217. The reversal of 237213 is 312732.

It can be written as a sum of positive squares in only one way, i.e., 191844 + 45369 = 438^2 + 213^2 .

It is not a de Polignac number, because 237213 - 2⁹ = 236701 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (237217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13170 + ... + 13187.

It is an arithmetic number, because the mean of its divisors is an integer number (57109).

2²³⁷²¹³ is an apocalyptic number.

It is an amenable number.

237213 is a deficient number, since it is larger than the sum of its proper divisors (105441).

237213 is a wasteful number, since it uses less digits than its factorization.

237213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26363 (or 26360 counting only the distinct ones).

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

The square root of 237213 is about 487.0451724430. The cubic root of 237213 is about 61.9031613468.

Adding to 237213 its reverse (312732), we get a palindrome (549945).

The spelling of 237213 in words is "two hundred thirty-seven thousand, two hundred thirteen".