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81341 = 136257
BaseRepresentation
bin10011110110111101
311010120122
4103312331
510100331
61424325
7456101
oct236675
9133518
1081341
1156127
123b0a5
132b040
1421901
151917b
hex13dbd

81341 has 4 divisors (see below), whose sum is σ = 87612. Its totient is φ = 75072.

The previous prime is 81331. The next prime is 81343. The reversal of 81341 is 14318.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14318 = 27159.

It can be written as a sum of positive squares in 2 ways, for example, as 52441 + 28900 = 229^2 + 170^2 .

It is a cyclic number.

It is not a de Polignac number, because 81341 - 210 = 80317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81343) 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, 3116 + ... + 3141.

It is an arithmetic number, because the mean of its divisors is an integer number (21903).

281341 is an apocalyptic number.

It is an amenable number.

81341 is a deficient number, since it is larger than the sum of its proper divisors (6271).

81341 is a wasteful number, since it uses less digits than its factorization.

81341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6270.

The product of its digits is 96, while the sum is 17.

The square root of 81341 is about 285.2034361644. The cubic root of 81341 is about 43.3281190307.

Adding to 81341 its reverse (14318), we get a palindrome (95659).

It can be divided in two parts, 813 and 41, that multiplied together give a palindrome (33333).

The spelling of 81341 in words is "eighty-one thousand, three hundred forty-one".

Divisors: 1 13 6257 81341