229388143 has 2 divisors, whose sum is σ = 229388144. Its totient is φ = 229388142.

The previous prime is 229388141. The next prime is 229388209. The reversal of 229388143 is 341883922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 229388143 - 2¹ = 229388141 is a prime.

Together with 229388141, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 229388096 and 229388105.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (229388141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114694071 + 114694072.

It is an arithmetic number, because the mean of its divisors is an integer number (114694072).

Almost surely, 2^229388143 is an apocalyptic number.

229388143 is a deficient number, since it is larger than the sum of its proper divisors (1).

229388143 is an equidigital number, since it uses as much as digits as its factorization.

229388143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 40.

The square root of 229388143 is about 15145.5651264652. The cubic root of 229388143 is about 612.1487803442.

The spelling of 229388143 in words is "two hundred twenty-nine million, three hundred eighty-eight thousand, one hundred forty-three".