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13514381 = 21536277
BaseRepresentation
bin110011100011…
…011010001101
3221102121020122
4303203122031
511424430011
61201354325
7222604346
oct63433215
927377218
1013514381
1176a0611
1246389a5
132a5239a
141b1b0cd
1512be3db
hexce368d

13514381 has 4 divisors (see below), whose sum is σ = 13522812. Its totient is φ = 13505952.

The previous prime is 13514329. The next prime is 13514387. The reversal of 13514381 is 18341531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18341531 = 131410887.

It can be written as a sum of positive squares in 2 ways, for example, as 7590025 + 5924356 = 2755^2 + 2434^2 .

It is a cyclic number.

It is not a de Polignac number, because 13514381 - 214 = 13497997 is a prime.

It is a super-2 number, since 2×135143812 = 365276987626322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13514381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13514387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 986 + ... + 5291.

It is an arithmetic number, because the mean of its divisors is an integer number (3380703).

Almost surely, 213514381 is an apocalyptic number.

It is an amenable number.

13514381 is a deficient number, since it is larger than the sum of its proper divisors (8431).

13514381 is an equidigital number, since it uses as much as digits as its factorization.

13514381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8430.

The product of its digits is 1440, while the sum is 26.

The square root of 13514381 is about 3676.1910994941. The cubic root of 13514381 is about 238.1946774740.

It can be divided in two parts, 135 and 14381, that multiplied together give a triangular number (1941435 = T1970).

The spelling of 13514381 in words is "thirteen million, five hundred fourteen thousand, three hundred eighty-one".

Divisors: 1 2153 6277 13514381