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14111231 = 31455201
BaseRepresentation
bin110101110101…
…000111111111
3222112220222012
4311311013333
512103024411
61222241435
7230641421
oct65650777
928486865
1014111231
117a68a82
12488627b
132c00c54
141c34811
15138b18b
hexd751ff

14111231 has 4 divisors (see below), whose sum is σ = 14566464. Its totient is φ = 13656000.

The previous prime is 14111219. The next prime is 14111239. The reversal of 14111231 is 13211141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13211141 = 15187491.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-14111231 is a prime.

It is a super-2 number, since 2×141112312 = 398253680670722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14111239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 227570 + ... + 227631.

It is an arithmetic number, because the mean of its divisors is an integer number (3641616).

Almost surely, 214111231 is an apocalyptic number.

14111231 is a deficient number, since it is larger than the sum of its proper divisors (455233).

14111231 is an equidigital number, since it uses as much as digits as its factorization.

14111231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455232.

The product of its digits is 24, while the sum is 14.

The square root of 14111231 is about 3756.4918474555. The cubic root of 14111231 is about 241.6508351632.

Adding to 14111231 its reverse (13211141), we get a palindrome (27322372).

The spelling of 14111231 in words is "fourteen million, one hundred eleven thousand, two hundred thirty-one".

Divisors: 1 31 455201 14111231