83181229 has 2 divisors, whose sum is σ = 83181230. Its totient is φ = 83181228.

The previous prime is 83181223. The next prime is 83181253. The reversal of 83181229 is 92218138.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53728900 + 29452329 = 7330^2 + 5427^2 .

It is a cyclic number.

It is not a de Polignac number, because 83181229 - 2⁹ = 83180717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 83181194 and 83181203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83181223) 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, 41590614 + 41590615.

It is an arithmetic number, because the mean of its divisors is an integer number (41590615).

Almost surely, 2^83181229 is an apocalyptic number.

It is an amenable number.

83181229 is a deficient number, since it is larger than the sum of its proper divisors (1).

83181229 is an equidigital number, since it uses as much as digits as its factorization.

83181229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6912, while the sum is 34.

The square root of 83181229 is about 9120.3743892452. The cubic root of 83181229 is about 436.5243197682.

The spelling of 83181229 in words is "eighty-three million, one hundred eighty-one thousand, two hundred twenty-nine".