135733181 has 2 divisors, whose sum is σ = 135733182. Its totient is φ = 135733180.

The previous prime is 135733123. The next prime is 135733183. The reversal of 135733181 is 181337531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132457081 + 3276100 = 11509^2 + 1810^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135733181 is a prime.

It is a super-2 number, since 2×135733181² = 36846992848757522, which contains 22 as substring.

Together with 135733183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135733183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67866590 + 67866591.

It is an arithmetic number, because the mean of its divisors is an integer number (67866591).

Almost surely, 2^135733181 is an apocalyptic number.

It is an amenable number.

135733181 is a deficient number, since it is larger than the sum of its proper divisors (1).

135733181 is an equidigital number, since it uses as much as digits as its factorization.

135733181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 135733181 is about 11650.4584029986. The cubic root of 135733181 is about 513.9197907110.

The spelling of 135733181 in words is "one hundred thirty-five million, seven hundred thirty-three thousand, one hundred eighty-one".