231283229 has 2 divisors, whose sum is σ = 231283230. Its totient is φ = 231283228.

The previous prime is 231283201. The next prime is 231283243. The reversal of 231283229 is 922382132.

231283229 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 can be written as a sum of positive squares in only one way, i.e., 231192025 + 91204 = 15205^2 + 302^2 .

It is a cyclic number.

It is not a de Polignac number, because 231283229 - 2¹² = 231279133 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 231283195 and 231283204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231283259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115641614 + 115641615.

It is an arithmetic number, because the mean of its divisors is an integer number (115641615).

Almost surely, 2^231283229 is an apocalyptic number.

It is an amenable number.

231283229 is a deficient number, since it is larger than the sum of its proper divisors (1).

231283229 is an equidigital number, since it uses as much as digits as its factorization.

231283229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 32.

The square root of 231283229 is about 15207.9988492898. The cubic root of 231283229 is about 613.8299112949.

The spelling of 231283229 in words is "two hundred thirty-one million, two hundred eighty-three thousand, two hundred twenty-nine".