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23831069 = 297311257
BaseRepresentation
bin101101011101…
…0001000011101
31122211202002012
41122322020131
522100043234
62210441005
7406363223
oct132721035
948752065
1023831069
11124a76a9
127b93165
134c25132
143244b13
15215b0ce
hex16ba21d

23831069 has 8 divisors (see below), whose sum is σ = 24992760. Its totient is φ = 22692096.

The previous prime is 23831047. The next prime is 23831083. The reversal of 23831069 is 96013832.

It can be written as a sum of positive squares in 4 ways, for example, as 8323225 + 15507844 = 2885^2 + 3938^2 .

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 23831069 - 220 = 22782493 is a prime.

It is a super-2 number, since 2×238310692 = 1135839699365522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23831009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3512 + ... + 7745.

It is an arithmetic number, because the mean of its divisors is an integer number (3124095).

Almost surely, 223831069 is an apocalyptic number.

23831069 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

23831069 is a deficient number, since it is larger than the sum of its proper divisors (1161691).

23831069 is a wasteful number, since it uses less digits than its factorization.

23831069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11359.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 23831069 is about 4881.7075905875. The cubic root of 23831069 is about 287.7715403021.

The spelling of 23831069 in words is "twenty-three million, eight hundred thirty-one thousand, sixty-nine".

Divisors: 1 29 73 2117 11257 326453 821761 23831069