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14731109 = 23640483
BaseRepresentation
bin111000001100…
…011101100101
31000201102021122
4320030131211
512232343414
61243423325
7236132561
oct70143545
930642248
1014731109
118351778
124b24b45
13308a143
141d566a1
15145eb8e
hexe0c765

14731109 has 4 divisors (see below), whose sum is σ = 15371616. Its totient is φ = 14090604.

The previous prime is 14731103. The next prime is 14731121. The reversal of 14731109 is 90113741.

14731109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90113741 = 631142811.

It is a cyclic number.

It is not a de Polignac number, because 14731109 - 28 = 14730853 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 (14731103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 320219 + ... + 320264.

It is an arithmetic number, because the mean of its divisors is an integer number (3842904).

Almost surely, 214731109 is an apocalyptic number.

It is an amenable number.

14731109 is a deficient number, since it is larger than the sum of its proper divisors (640507).

14731109 is an equidigital number, since it uses as much as digits as its factorization.

14731109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640506.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 14731109 is about 3838.1126872462. The cubic root of 14731109 is about 245.1386636959.

The spelling of 14731109 in words is "fourteen million, seven hundred thirty-one thousand, one hundred nine".

Divisors: 1 23 640483 14731109