Search a number
-
+
12283531231 = 43613466009
BaseRepresentation
bin10110111000010011…
…11100111111011111
31011201001122001002011
423130021330333133
5200124040444411
65350514412051
7613253202256
oct133411747737
934631561064
1012283531231
115233807904
122469891027
131209b1759a
1484754579d
154bd5c9c21
hex2dc27cfdf

12283531231 has 8 divisors (see below), whose sum is σ = 12589726160. Its totient is φ = 11978269632.

The previous prime is 12283531219. The next prime is 12283531241. The reversal of 12283531231 is 13213538221.

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 12283531231 - 211 = 12283529183 is a prime.

It is a super-2 number, since 2×122835312312 (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 = 12283531193 and 12283531202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12283531201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206646 + ... + 259363.

It is an arithmetic number, because the mean of its divisors is an integer number (1573715770).

Almost surely, 212283531231 is an apocalyptic number.

12283531231 is a deficient number, since it is larger than the sum of its proper divisors (306194929).

12283531231 is an equidigital number, since it uses as much as digits as its factorization.

12283531231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466665.

The product of its digits is 8640, while the sum is 31.

The spelling of 12283531231 in words is "twelve billion, two hundred eighty-three million, five hundred thirty-one thousand, two hundred thirty-one".

Divisors: 1 43 613 26359 466009 20038387 285663517 12283531231