231078227 has 2 divisors, whose sum is σ = 231078228. Its totient is φ = 231078226.

The previous prime is 231078193. The next prime is 231078241. The reversal of 231078227 is 722870132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231078227 - 2⁸ = 231077971 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 231078193 and 231078202.

It is not a weakly prime, because it can be changed into another prime (231078427) 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, 115539113 + 115539114.

It is an arithmetic number, because the mean of its divisors is an integer number (115539114).

Almost surely, 2^231078227 is an apocalyptic number.

231078227 is a deficient number, since it is larger than the sum of its proper divisors (1).

231078227 is an equidigital number, since it uses as much as digits as its factorization.

231078227 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 231078227 is about 15201.2574150956. The cubic root of 231078227 is about 613.6484980014.

The spelling of 231078227 in words is "two hundred thirty-one million, seventy-eight thousand, two hundred twenty-seven".