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13211019 = 34433793
BaseRepresentation
bin110010011001…
…010110001011
3220212012010000
4302121112023
511340223034
61151054043
7220202043
oct62312613
926765100
1013211019
1175036a8
124511323
132977293
141a7c723
15125e599
hexc9958b

13211019 has 20 divisors (see below), whose sum is σ = 20199256. Its totient is φ = 8600256.

The previous prime is 13210937. The next prime is 13211059. The reversal of 13211019 is 91011231.

13211019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13211019 - 27 = 13210891 is a prime.

It is a super-2 number, since 2×132110192 = 349062046036722, 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 = 13210992 and 13211010.

It is not an unprimeable number, because it can be changed into a prime (13211059) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1587 + ... + 5379.

Almost surely, 213211019 is an apocalyptic number.

13211019 is a deficient number, since it is larger than the sum of its proper divisors (6988237).

13211019 is an equidigital number, since it uses as much as digits as its factorization.

13211019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3848 (or 3839 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

The square root of 13211019 is about 3634.6965485443. The cubic root of 13211019 is about 236.3988932928.

The spelling of 13211019 in words is "thirteen million, two hundred eleven thousand, nineteen".

Divisors: 1 3 9 27 43 81 129 387 1161 3483 3793 11379 34137 102411 163099 307233 489297 1467891 4403673 13211019