226531 has 2 divisors, whose sum is σ = 226532. Its totient is φ = 226530.

The previous prime is 226511. The next prime is 226547. The reversal of 226531 is 135622.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 226531 - 2¹⁵ = 193763 is a prime.

It is a super-2 number, since 2×226531² = 102632587922, which contains 22 as substring.

It is a Chen prime.

226531 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 226499 and 226508.

It is not a weakly prime, because it can be changed into another prime (226511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113265 + 113266.

It is an arithmetic number, because the mean of its divisors is an integer number (113266).

2²²⁶⁵³¹ is an apocalyptic number.

226531 is a deficient number, since it is larger than the sum of its proper divisors (1).

226531 is an equidigital number, since it uses as much as digits as its factorization.

226531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 360, while the sum is 19.

The square root of 226531 is about 475.9527287452. The cubic root of 226531 is about 60.9596615865.

Subtracting from 226531 its reverse (135622), we obtain a palindrome (90909).

It can be divided in two parts, 226 and 531, that added together give a palindrome (757).

The spelling of 226531 in words is "two hundred twenty-six thousand, five hundred thirty-one".