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23413 = 131801
BaseRepresentation
bin101101101110101
31012010011
411231311
51222123
6300221
7125155
oct55565
935104
1023413
1116655
1211671
13a870
148765
156e0d
hex5b75

23413 has 4 divisors (see below), whose sum is σ = 25228. Its totient is φ = 21600.

The previous prime is 23399. The next prime is 23417. The reversal of 23413 is 31432.

Adding to 23413 its reverse (31432), we get a palindrome (54845).

23413 is an esthetic number in base 14, because in such base its adjacent digits differ by 1.

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 3249 + 20164 = 57^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 23413 - 29 = 22901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 1801 = 23413 / (2 + 3 + 4 + 1 + 3).

It is a Duffinian number.

It is a nialpdrome in base 13 and base 14.

It is a junction number, because it is equal to n+sod(n) for n = 23393 and 23402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23417) 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, 888 + ... + 913.

It is an arithmetic number, because the mean of its divisors is an integer number (6307).

223413 is an apocalyptic number.

It is an amenable number.

23413 is a deficient number, since it is larger than the sum of its proper divisors (1815).

23413 is a wasteful number, since it uses less digits than its factorization.

23413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814.

The product of its digits is 72, while the sum is 13.

The square root of 23413 is about 153.0130713371. The cubic root of 23413 is about 28.6078808543.

The spelling of 23413 in words is "twenty-three thousand, four hundred thirteen".

Divisors: 1 13 1801 23413