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13331240231 = 291938123719
BaseRepresentation
bin11000110101001101…
…01001010100100111
31021102002002011122012
430122212221110213
5204300244141411
610042502424435
7651234446411
oct143246512447
937362064565
1013331240231
115721157111
12270073211b
131345bba13a
149067519b1
1553058218b
hex31a9a9527

13331240231 has 8 divisors (see below), whose sum is σ = 13792231200. Its totient is φ = 12870335520.

The previous prime is 13331240227. The next prime is 13331240257. The reversal of 13331240231 is 13204213331.

13331240231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 13331240231 - 22 = 13331240227 is a prime.

It is a super-2 number, since 2×133312402312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13331240197 and 13331240206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13331240281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 550190 + ... + 573908.

It is an arithmetic number, because the mean of its divisors is an integer number (1724028900).

Almost surely, 213331240231 is an apocalyptic number.

13331240231 is a deficient number, since it is larger than the sum of its proper divisors (460990969).

13331240231 is a wasteful number, since it uses less digits than its factorization.

13331240231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43129.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 13331240231 its reverse (13204213331), we get a palindrome (26535453562).

The spelling of 13331240231 in words is "thirteen billion, three hundred thirty-one million, two hundred forty thousand, two hundred thirty-one".

Divisors: 1 29 19381 23719 562049 687851 459697939 13331240231