229781243 has 2 divisors, whose sum is σ = 229781244. Its totient is φ = 229781242.

The previous prime is 229781203. The next prime is 229781273. The reversal of 229781243 is 342187922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 229781243 - 2¹⁴ = 229764859 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 229781197 and 229781206.

It is not a weakly prime, because it can be changed into another prime (229781203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114890621 + 114890622.

It is an arithmetic number, because the mean of its divisors is an integer number (114890622).

Almost surely, 2^229781243 is an apocalyptic number.

229781243 is a deficient number, since it is larger than the sum of its proper divisors (1).

229781243 is an equidigital number, since it uses as much as digits as its factorization.

229781243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 229781243 is about 15158.5369676628. The cubic root of 229781243 is about 612.4982583874.

The spelling of 229781243 in words is "two hundred twenty-nine million, seven hundred eighty-one thousand, two hundred forty-three".