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13984031 = 19077333
BaseRepresentation
bin110101010110…
…000100011111
3222022110111002
4311112010133
512034442111
61215420515
7226601525
oct65260437
928273432
1013984031
117991456
12482473b
132b88099
141c00315
15136363b
hexd5611f

13984031 has 4 divisors (see below), whose sum is σ = 13993272. Its totient is φ = 13974792.

The previous prime is 13984021. The next prime is 13984037. The reversal of 13984031 is 13048931.

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.

It is a cyclic number.

It is not a de Polignac number, because 13984031 - 26 = 13983967 is a prime.

It is a super-2 number, since 2×139840312 = 391106246017922, 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 = 13983985 and 13984003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13984037) 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, 1760 + ... + 5573.

It is an arithmetic number, because the mean of its divisors is an integer number (3498318).

Almost surely, 213984031 is an apocalyptic number.

13984031 is a deficient number, since it is larger than the sum of its proper divisors (9241).

13984031 is an equidigital number, since it uses as much as digits as its factorization.

13984031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9240.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 13984031 is about 3739.5228305226. The cubic root of 13984031 is about 240.9225545018.

It can be divided in two parts, 139840 and 31, that multiplied together give a triangular number (4335040 = T2944).

The spelling of 13984031 in words is "thirteen million, nine hundred eighty-four thousand, thirty-one".

Divisors: 1 1907 7333 13984031