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12913111 = 37675209
BaseRepresentation
bin110001010000…
…100111010111
3220022001110101
4301100213113
511301204421
61140434531
7214521361
oct61204727
926261411
1012913111
11731a8a2
1243a8a47
1328a17c3
141a01d31
151201191
hexc509d7

12913111 has 8 divisors (see below), whose sum is σ = 13462640. Its totient is φ = 12374208.

The previous prime is 12913039. The next prime is 12913123. The reversal of 12913111 is 11131921.

12913111 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 12913111 - 213 = 12904919 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 (12913171) 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, 126 + ... + 5083.

It is an arithmetic number, because the mean of its divisors is an integer number (1682830).

Almost surely, 212913111 is an apocalyptic number.

12913111 is a deficient number, since it is larger than the sum of its proper divisors (549529).

12913111 is an equidigital number, since it uses as much as digits as its factorization.

12913111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5313.

The product of its digits is 54, while the sum is 19.

The square root of 12913111 is about 3593.4817378136. The cubic root of 12913111 is about 234.6084380195.

The spelling of 12913111 in words is "twelve million, nine hundred thirteen thousand, one hundred eleven".

Divisors: 1 37 67 2479 5209 192733 349003 12913111