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14130731 = 15193581
BaseRepresentation
bin110101111001…
…111000101011
3222120220201102
4311321320223
512104140411
61222512015
7231052316
oct65717053
928526642
1014130731
117a8169a
12489560b
132c09aa4
141c3b97d
151391d3b
hexd79e2b

14130731 has 4 divisors (see below), whose sum is σ = 14224464. Its totient is φ = 14037000.

The previous prime is 14130719. The next prime is 14130733. The reversal of 14130731 is 13703141.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 14130731 - 218 = 13868587 is a prime.

It is a super-2 number, since 2×141307312 = 399355117188722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14130733) 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, 46640 + ... + 46941.

It is an arithmetic number, because the mean of its divisors is an integer number (3556116).

Almost surely, 214130731 is an apocalyptic number.

14130731 is a deficient number, since it is larger than the sum of its proper divisors (93733).

14130731 is an equidigital number, since it uses as much as digits as its factorization.

14130731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93732.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 14130731 is about 3759.0864581704. The cubic root of 14130731 is about 241.7620945894.

Adding to 14130731 its reverse (13703141), we get a palindrome (27833872).

The spelling of 14130731 in words is "fourteen million, one hundred thirty thousand, seven hundred thirty-one".

Divisors: 1 151 93581 14130731