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BaseRepresentation
bin101101000111101
31011200121
411220331
51214401
6254541
7124231
oct55075
934617
1023101
11163a1
1211451
13a690
1485c1
156ca1
hex5a3d

23101 has 4 divisors (see below), whose sum is σ = 24892. Its totient is φ = 21312.

The previous prime is 23099. The next prime is 23117. The reversal of 23101 is 10132.

Adding to 23101 its reverse (10132), we get a palindrome (33233).

23101 = T53 + T54 + ... + T65.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7225 + 15876 = 85^2 + 126^2 .

It is a cyclic number.

It is not a de Polignac number, because 23101 - 21 = 23099 is a prime.

It is a house number.

It is a Duffinian number.

23101 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23131) 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, 876 + ... + 901.

It is an arithmetic number, because the mean of its divisors is an integer number (6223).

223101 is an apocalyptic number.

It is an amenable number.

23101 is a deficient number, since it is larger than the sum of its proper divisors (1791).

23101 is a wasteful number, since it uses less digits than its factorization.

23101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790.

The product of its (nonzero) digits is 6, while the sum is 7.

The square root of 23101 is about 151.9901312586. The cubic root of 23101 is about 28.4802366317.

The spelling of 23101 in words is "twenty-three thousand, one hundred one", and thus it is an iban number.

Divisors: 1 13 1777 23101