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23307133 = 31279307
BaseRepresentation
bin101100011101…
…0001101111101
31121212010101011
41120322031331
521431312013
62151315221
7402051553
oct130721575
947763334
1023307133
1112179aa3
12797bb11
134aa0805
143149bd3
1520a5c3d
hex163a37d

23307133 has 12 divisors (see below), whose sum is σ = 24467520. Its totient is φ = 22197240.

The previous prime is 23307113. The next prime is 23307139. The reversal of 23307133 is 33170332.

It is not a de Polignac number, because 23307133 - 25 = 23307101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23307139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75766 + ... + 76072.

It is an arithmetic number, because the mean of its divisors is an integer number (2038960).

Almost surely, 223307133 is an apocalyptic number.

It is an amenable number.

23307133 is a deficient number, since it is larger than the sum of its proper divisors (1160387).

23307133 is an equidigital number, since it uses as much as digits as its factorization.

23307133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 22.

The square root of 23307133 is about 4827.7461615126. The cubic root of 23307133 is about 285.6469676998.

Adding to 23307133 its reverse (33170332), we get a palindrome (56477465).

The spelling of 23307133 in words is "twenty-three million, three hundred seven thousand, one hundred thirty-three".

Divisors: 1 31 79 307 961 2449 9517 24253 75919 295027 751843 23307133