229771 has 2 divisors, whose sum is σ = 229772. Its totient is φ = 229770.

The previous prime is 229769. The next prime is 229777. The reversal of 229771 is 177922.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 229771 - 2¹ = 229769 is a prime.

Together with 229769, it forms a pair of twin primes.

229771 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (229777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114885 + 114886.

It is an arithmetic number, because the mean of its divisors is an integer number (114886).

2²²⁹⁷⁷¹ is an apocalyptic number.

229771 is a deficient number, since it is larger than the sum of its proper divisors (1).

229771 is an equidigital number, since it uses as much as digits as its factorization.

229771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1764, while the sum is 28.

The square root of 229771 is about 479.3443438698. The cubic root of 229771 is about 61.2489157104.

It can be divided in two parts, 229 and 771, that added together give a cube (1000 = 10³).

The spelling of 229771 in words is "two hundred twenty-nine thousand, seven hundred seventy-one".