226531237 has 2 divisors, whose sum is σ = 226531238. Its totient is φ = 226531236.

The previous prime is 226531231. The next prime is 226531271. The reversal of 226531237 is 732135622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 198979236 + 27552001 = 14106^2 + 5249^2 .

It is a cyclic number.

It is not a de Polignac number, because 226531237 - 2¹¹ = 226529189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 226531199 and 226531208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (226531231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113265618 + 113265619.

It is an arithmetic number, because the mean of its divisors is an integer number (113265619).

Almost surely, 2^226531237 is an apocalyptic number.

It is an amenable number.

226531237 is a deficient number, since it is larger than the sum of its proper divisors (1).

226531237 is an equidigital number, since it uses as much as digits as its factorization.

226531237 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 31.

The square root of 226531237 is about 15050.9546873280. The cubic root of 226531237 is about 609.5968284547.

Adding to 226531237 its reverse (732135622), we get a palindrome (958666859).

The spelling of 226531237 in words is "two hundred twenty-six million, five hundred thirty-one thousand, two hundred thirty-seven".