820430227 has 2 divisors, whose sum is σ = 820430228. Its totient is φ = 820430226.

The previous prime is 820430201. The next prime is 820430231. The reversal of 820430227 is 722034028.

820430227 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 820430227 - 2⁷ = 820430099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 820430195 and 820430204.

It is not a weakly prime, because it can be changed into another prime (820430257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 410215113 + 410215114.

It is an arithmetic number, because the mean of its divisors is an integer number (410215114).

Almost surely, 2^820430227 is an apocalyptic number.

820430227 is a deficient number, since it is larger than the sum of its proper divisors (1).

820430227 is an equidigital number, since it uses as much as digits as its factorization.

820430227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 820430227 is about 28643.1532307461. The cubic root of 820430227 is about 936.1538281004.

The spelling of 820430227 in words is "eight hundred twenty million, four hundred thirty thousand, two hundred twenty-seven".