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13320233231 = 191503138647
BaseRepresentation
bin11000110011111001…
…01010000100001111
31021101022100221212112
430121330222010033
5204234434430411
610041430454235
7651042054134
oct143174520417
937338327775
1013320233231
115715a19418
1226b8b0437b
131343835116
149050c858b
1552e60ab8b
hex319f2a10f

13320233231 has 8 divisors (see below), whose sum is σ = 13416689664. Its totient is φ = 13224055480.

The previous prime is 13320233183. The next prime is 13320233237. The reversal of 13320233231 is 13233202331.

13320233231 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 13320233231 - 26 = 13320233167 is a prime.

It is a super-2 number, since 2×133202332312 (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 = 13320233197 and 13320233206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320233237) 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, 26750 + ... + 165396.

It is an arithmetic number, because the mean of its divisors is an integer number (1677086208).

Almost surely, 213320233231 is an apocalyptic number.

13320233231 is a deficient number, since it is larger than the sum of its proper divisors (96456433).

13320233231 is a wasteful number, since it uses less digits than its factorization.

13320233231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139341.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 13320233231 its reverse (13233202331), we get a palindrome (26553435562).

The spelling of 13320233231 in words is "thirteen billion, three hundred twenty million, two hundred thirty-three thousand, two hundred thirty-one".

Divisors: 1 191 503 96073 138647 26481577 69739441 13320233231