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14123513 = 61231533
BaseRepresentation
bin110101111000…
…000111111001
3222120112211002
4311320013321
512103423023
61222414345
7231022265
oct65700771
928515732
1014123513
117a77228
1248913b5
132c06711
141c390a5
15138eb28
hexd781f9

14123513 has 4 divisors (see below), whose sum is σ = 14355108. Its totient is φ = 13891920.

The previous prime is 14123509. The next prime is 14123539. The reversal of 14123513 is 31532141.

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

It can be written as a sum of positive squares in 2 ways, for example, as 344569 + 13778944 = 587^2 + 3712^2 .

It is a cyclic number.

It is not a de Polignac number, because 14123513 - 22 = 14123509 is a prime.

It is a super-2 number, since 2×141235132 = 398947238922338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14125513) 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, 115706 + ... + 115827.

It is an arithmetic number, because the mean of its divisors is an integer number (3588777).

Almost surely, 214123513 is an apocalyptic number.

It is an amenable number.

14123513 is a deficient number, since it is larger than the sum of its proper divisors (231595).

14123513 is an equidigital number, since it uses as much as digits as its factorization.

14123513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231594.

The product of its digits is 360, while the sum is 20.

The square root of 14123513 is about 3758.1262618491. The cubic root of 14123513 is about 241.7209234236.

Adding to 14123513 its reverse (31532141), we get a palindrome (45655654).

The spelling of 14123513 in words is "fourteen million, one hundred twenty-three thousand, five hundred thirteen".

Divisors: 1 61 231533 14123513