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13814231 = 19770123
BaseRepresentation
bin110100101100…
…100111010111
3221222211120012
4310230213113
512014023411
61212030435
7225263504
oct64544727
927884505
1013814231
117885922
12476241b
132b28a02
141b984ab
15132d18b
hexd2c9d7

13814231 has 4 divisors (see below), whose sum is σ = 13884552. Its totient is φ = 13743912.

The previous prime is 13814221. The next prime is 13814233. The reversal of 13814231 is 13241831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13241831 = 30743133.

It is a cyclic number.

It is not a de Polignac number, because 13814231 - 210 = 13813207 is a prime.

It is a super-2 number, since 2×138142312 = 381665956242722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13814197 and 13814206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13814233) 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, 34865 + ... + 35258.

It is an arithmetic number, because the mean of its divisors is an integer number (3471138).

Almost surely, 213814231 is an apocalyptic number.

13814231 is a deficient number, since it is larger than the sum of its proper divisors (70321).

13814231 is an equidigital number, since it uses as much as digits as its factorization.

13814231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70320.

The product of its digits is 576, while the sum is 23.

The square root of 13814231 is about 3716.7500588552. The cubic root of 13814231 is about 239.9434531131.

The spelling of 13814231 in words is "thirteen million, eight hundred fourteen thousand, two hundred thirty-one".

Divisors: 1 197 70123 13814231