226215331 has 2 divisors, whose sum is σ = 226215332. Its totient is φ = 226215330.

The previous prime is 226215329. The next prime is 226215343. The reversal of 226215331 is 133512622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 226215331 - 2¹ = 226215329 is a prime.

It is a super-2 number, since 2×226215331² = 102346751958879122, which contains 22 as substring.

Together with 226215329, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 226215296 and 226215305.

It is not a weakly prime, because it can be changed into another prime (226215391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113107665 + 113107666.

It is an arithmetic number, because the mean of its divisors is an integer number (113107666).

Almost surely, 2^226215331 is an apocalyptic number.

226215331 is a deficient number, since it is larger than the sum of its proper divisors (1).

226215331 is an equidigital number, since it uses as much as digits as its factorization.

226215331 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 226215331 is about 15040.4564757856. The cubic root of 226215331 is about 609.3133283579.

Adding to 226215331 its reverse (133512622), we get a palindrome (359727953).

The spelling of 226215331 in words is "two hundred twenty-six million, two hundred fifteen thousand, three hundred thirty-one".