181341133 has 2 divisors, whose sum is σ = 181341134. Its totient is φ = 181341132.

The previous prime is 181341113. The next prime is 181341151. The reversal of 181341133 is 331143181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117548964 + 63792169 = 10842^2 + 7987^2 .

It is a cyclic number.

It is not a de Polignac number, because 181341133 - 2⁵ = 181341101 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 181341098 and 181341107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181341113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90670566 + 90670567.

It is an arithmetic number, because the mean of its divisors is an integer number (90670567).

Almost surely, 2^181341133 is an apocalyptic number.

It is an amenable number.

181341133 is a deficient number, since it is larger than the sum of its proper divisors (1).

181341133 is an equidigital number, since it uses as much as digits as its factorization.

181341133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 25.

The square root of 181341133 is about 13466.2961871481. The cubic root of 181341133 is about 566.0204317396.

The spelling of 181341133 in words is "one hundred eighty-one million, three hundred forty-one thousand, one hundred thirty-three".