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27631 is a prime number
BaseRepresentation
bin110101111101111
31101220101
412233233
51341011
6331531
7143362
oct65757
941811
1027631
111983a
1213ba7
13c766
14a0d9
1582c1
hex6bef

27631 has 2 divisors, whose sum is σ = 27632. Its totient is φ = 27630.

The previous prime is 27617. The next prime is 27647. The reversal of 27631 is 13672.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27631 - 211 = 25583 is a prime.

It is a super-2 number, since 2×276312 = 1526944322, which contains 22 as substring.

It is a plaindrome in base 16.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 27599 and 27608.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13815 + 13816.

It is an arithmetic number, because the mean of its divisors is an integer number (13816).

227631 is an apocalyptic number.

27631 is a deficient number, since it is larger than the sum of its proper divisors (1).

27631 is an equidigital number, since it uses as much as digits as its factorization.

27631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252, while the sum is 19.

The square root of 27631 is about 166.2257501111. The cubic root of 27631 is about 30.2319063985.

The spelling of 27631 in words is "twenty-seven thousand, six hundred thirty-one".