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135181 is a prime number
BaseRepresentation
bin100001000000001101
320212102201
4201000031
513311211
62521501
71102054
oct410015
9225381
10135181
1192622
1266291
13496b7
143739b
152a0c1
hex2100d

135181 has 2 divisors, whose sum is σ = 135182. Its totient is φ = 135180.

The previous prime is 135173. The next prime is 135193. The reversal of 135181 is 181531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 133956 + 1225 = 366^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 135181 - 23 = 135173 is a prime.

It is a super-2 number, since 2×1351812 = 36547805522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67590 + 67591.

It is an arithmetic number, because the mean of its divisors is an integer number (67591).

2135181 is an apocalyptic number.

It is an amenable number.

135181 is a deficient number, since it is larger than the sum of its proper divisors (1).

135181 is an equidigital number, since it uses as much as digits as its factorization.

135181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120, while the sum is 19.

The square root of 135181 is about 367.6696887153. The cubic root of 135181 is about 51.3221945060.

The spelling of 135181 in words is "one hundred thirty-five thousand, one hundred eighty-one".