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12387475311 = 327115236747
BaseRepresentation
bin10111000100101100…
…11101111101101111
31011222022012221112220
423202112131331233
5200332143202221
65405110330423
7615654542241
oct134226357557
934868187486
1012387475311
115287452602
122498659a13
13122550c363
14857282091
154c77ad0c6
hex2e259df6f

12387475311 has 8 divisors (see below), whose sum is σ = 16577581824. Its totient is φ = 8227842840.

The previous prime is 12387475291. The next prime is 12387475327. The reversal of 12387475311 is 11357478321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12387475311 - 210 = 12387474287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12387475351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7617561 + ... + 7619186.

It is an arithmetic number, because the mean of its divisors is an integer number (2072197728).

Almost surely, 212387475311 is an apocalyptic number.

12387475311 is a deficient number, since it is larger than the sum of its proper divisors (4190106513).

12387475311 is a wasteful number, since it uses less digits than its factorization.

12387475311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15237021.

The product of its digits is 141120, while the sum is 42.

The spelling of 12387475311 in words is "twelve billion, three hundred eighty-seven million, four hundred seventy-five thousand, three hundred eleven".

Divisors: 1 3 271 813 15236747 45710241 4129158437 12387475311