Search a number
-
+
27331 = 151181
BaseRepresentation
bin110101011000011
31101111021
412223003
51333311
6330311
7142453
oct65303
941437
1027331
1119597
1213997
13c595
149d63
158171
hex6ac3

27331 has 4 divisors (see below), whose sum is σ = 27664. Its totient is φ = 27000.

The previous prime is 27329. The next prime is 27337. The reversal of 27331 is 13372.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a 3-Lehmer number, since φ(27331) divides (27331-1)3.

It is a cyclic number.

It is not a de Polignac number, because 27331 - 21 = 27329 is a prime.

It is a super-2 number, since 2×273312 = 1493967122, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

27331 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (27337) 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, 61 + ... + 241.

It is an arithmetic number, because the mean of its divisors is an integer number (6916).

227331 is an apocalyptic number.

27331 is a deficient number, since it is larger than the sum of its proper divisors (333).

27331 is a wasteful number, since it uses less digits than its factorization.

27331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332.

The product of its digits is 126, while the sum is 16.

The square root of 27331 is about 165.3209000701. The cubic root of 27331 is about 30.1220950121.

The spelling of 27331 in words is "twenty-seven thousand, three hundred thirty-one".

Divisors: 1 151 181 27331