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12223031887 = 112348312379
BaseRepresentation
bin10110110001000110…
…01010101001001111
31011112211210100120201
423120203022221033
5200013044010022
65340513554331
7611620025323
oct133043125117
934484710521
1012223031887
115202645850
1224515759a7
1311ca424261
1483d4b7983
154b8129127
hex2d88caa4f

12223031887 has 8 divisors (see below), whose sum is σ = 13913965440. Its totient is φ = 10628723160.

The previous prime is 12223031869. The next prime is 12223031921. The reversal of 12223031887 is 78813032221.

12223031887 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 de Polignac number, because none of the positive numbers 2k-12223031887 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 (12223031857) 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, 24155937 + ... + 24156442.

It is an arithmetic number, because the mean of its divisors is an integer number (1739245680).

Almost surely, 212223031887 is an apocalyptic number.

12223031887 is a deficient number, since it is larger than the sum of its proper divisors (1690933553).

12223031887 is a wasteful number, since it uses less digits than its factorization.

12223031887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48312413.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 12223031887 in words is "twelve billion, two hundred twenty-three million, thirty-one thousand, eight hundred eighty-seven".

Divisors: 1 11 23 253 48312379 531436169 1111184717 12223031887