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BaseRepresentation
bin101101101101001
31012002201
411231221
51222101
6300201
7125140
oct55551
935081
1023401
1116644
1211661
13a861
148757
156e01
hex5b69

23401 has 4 divisors (see below), whose sum is σ = 26752. Its totient is φ = 20052.

The previous prime is 23399. The next prime is 23417. The reversal of 23401 is 10432.

Adding to 23401 its reverse (10432), we get a palindrome (33833).

It can be divided in two parts, 23 and 401, that added together give a palindrome (424).

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23401 - 21 = 23399 is a prime.

It is a Leyland number of the form 65 + 56.

It is a Duffinian number.

It is a nialpdrome in base 8 and base 13.

It is not an unprimeable number, because it can be changed into a prime (23431) 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, 1665 + ... + 1678.

It is an arithmetic number, because the mean of its divisors is an integer number (6688).

223401 is an apocalyptic number.

It is an amenable number.

23401 is a deficient number, since it is larger than the sum of its proper divisors (3351).

23401 is an equidigital number, since it uses as much as digits as its factorization.

23401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3350.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 23401 is about 152.9738539751. The cubic root of 23401 is about 28.6029924983.

The spelling of 23401 in words is "twenty-three thousand, four hundred one", and thus it is an iban number.

Divisors: 1 7 3343 23401