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23241681 = 331635281
BaseRepresentation
bin101100010101…
…0001111010001
31121201210121000
41120222033101
521422213211
62150052213
7401360001
oct130521721
947653530
1023241681
1112134901
12794a069
134a79a98
143130001
152091656
hex162a3d1

23241681 has 16 divisors (see below), whose sum is σ = 34649920. Its totient is φ = 15396480.

The previous prime is 23241679. The next prime is 23241683. The reversal of 23241681 is 18614232.

It is an interprime number because it is at equal distance from previous prime (23241679) and next prime (23241683).

It is not a de Polignac number, because 23241681 - 21 = 23241679 is a prime.

It is a super-2 number, since 2×232416812 = 1080351471411522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23241683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1761 + ... + 7041.

It is an arithmetic number, because the mean of its divisors is an integer number (2165620).

Almost surely, 223241681 is an apocalyptic number.

It is an amenable number.

23241681 is a deficient number, since it is larger than the sum of its proper divisors (11408239).

23241681 is a wasteful number, since it uses less digits than its factorization.

23241681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5453 (or 5447 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 23241681 is about 4820.9626632033. The cubic root of 23241681 is about 285.3793286929.

It can be divided in two parts, 2324 and 1681, that added together give a triangular number (4005 = T89).

The spelling of 23241681 in words is "twenty-three million, two hundred forty-one thousand, six hundred eighty-one".

Divisors: 1 3 9 27 163 489 1467 4401 5281 15843 47529 142587 860803 2582409 7747227 23241681