226381 has 2 divisors, whose sum is σ = 226382. Its totient is φ = 226380.

The previous prime is 226379. The next prime is 226397. The reversal of 226381 is 183622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188356 + 38025 = 434^2 + 195^2 .

It is a cyclic number.

It is not a de Polignac number, because 226381 - 2¹ = 226379 is a prime.

It is a super-2 number, since 2×226381² = 102496714322, which contains 22 as substring.

Together with 226379, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (223381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113190 + 113191.

It is an arithmetic number, because the mean of its divisors is an integer number (113191).

2²²⁶³⁸¹ is an apocalyptic number.

It is an amenable number.

226381 is a deficient number, since it is larger than the sum of its proper divisors (1).

226381 is an equidigital number, since it uses as much as digits as its factorization.

226381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 22.

The square root of 226381 is about 475.7951239767. The cubic root of 226381 is about 60.9462035782.

The spelling of 226381 in words is "two hundred twenty-six thousand, three hundred eighty-one".