181134229 has 4 divisors (see below), whose sum is σ = 181421920. Its totient is φ = 180846540.

The previous prime is 181134221. The next prime is 181134241. The reversal of 181134229 is 922431181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 181134229 - 2³ = 181134221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 181134229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (181134221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142899 + ... + 144160.

It is an arithmetic number, because the mean of its divisors is an integer number (45355480).

Almost surely, 2^181134229 is an apocalyptic number.

It is an amenable number.

181134229 is a deficient number, since it is larger than the sum of its proper divisors (287691).

181134229 is an equidigital number, since it uses as much as digits as its factorization.

181134229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287690.

The product of its digits is 3456, while the sum is 31.

The square root of 181134229 is about 13458.6117040355. The cubic root of 181134229 is about 565.8050798631.

The spelling of 181134229 in words is "one hundred eighty-one million, one hundred thirty-four thousand, two hundred twenty-nine".