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22631 = 75361
BaseRepresentation
bin101100001100111
31011001012
411201213
51211011
6252435
7122660
oct54147
934035
1022631
1116004
121111b
13a3bb
148367
156a8b
hex5867

22631 has 8 divisors (see below), whose sum is σ = 26784. Its totient is φ = 18720.

The previous prime is 22621. The next prime is 22637. The reversal of 22631 is 13622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22631 - 26 = 22567 is a prime.

It is a super-2 number, since 2×226312 = 1024324322, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 22631.

It is not an unprimeable number, because it can be changed into a prime (22637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341 + ... + 401.

It is an arithmetic number, because the mean of its divisors is an integer number (3348).

222631 is an apocalyptic number.

22631 is a deficient number, since it is larger than the sum of its proper divisors (4153).

22631 is an equidigital number, since it uses as much as digits as its factorization.

22631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121.

The product of its digits is 72, while the sum is 14.

The square root of 22631 is about 150.4360329176. The cubic root of 22631 is about 28.2857640862.

Subtracting from 22631 its reverse (13622), we obtain a palindrome (9009).

The spelling of 22631 in words is "twenty-two thousand, six hundred thirty-one".

Divisors: 1 7 53 61 371 427 3233 22631