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13872027831 = 37958531763
BaseRepresentation
bin11001110101101011…
…00101100010110111
31022210202200000202120
430322311211202313
5211402214342311
610212301411023
71000522201554
oct147265454267
938722600676
1013872027831
115979441912
122831869a73
131400c533bc
149584c3a2b
15562ca5706
hex33ad658b7

13872027831 has 8 divisors (see below), whose sum is σ = 18730164480. Its totient is φ = 9130954872.

The previous prime is 13872027817. The next prime is 13872027833.

13872027831 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 13872027831 - 27 = 13872027703 is a prime.

It is a super-2 number, since 2×138720278312 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13872027833) 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, 29265645 + ... + 29266118.

It is an arithmetic number, because the mean of its divisors is an integer number (2341270560).

Almost surely, 213872027831 is an apocalyptic number.

13872027831 is a deficient number, since it is larger than the sum of its proper divisors (4858136649).

13872027831 is an equidigital number, since it uses as much as digits as its factorization.

13872027831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58531845.

The product of its (nonzero) digits is 112896, while the sum is 42.

The spelling of 13872027831 in words is "thirteen billion, eight hundred seventy-two million, twenty-seven thousand, eight hundred thirty-one".

Divisors: 1 3 79 237 58531763 175595289 4624009277 13872027831