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13000001211 = 321444444579
BaseRepresentation
bin11000001101101110…
…00100011010111011
31020112222210111010100
430012313010122323
5203111000014321
65545551050443
7640103121111
oct140667043273
936488714110
1013000001211
11557118635a
122629810a23
1312c23a2412
148b4769ab1
15511452326
hex306dc46bb

13000001211 has 6 divisors (see below), whose sum is σ = 18777779540. Its totient is φ = 8666667468.

The previous prime is 13000001141. The next prime is 13000001213. The reversal of 13000001211 is 11210000031.

It is not a de Polignac number, because 13000001211 - 214 = 12999984827 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1444444579 = 13000001211 / (1 + 3 + 0 + 0 + 0 + 0 + 0 + 1 + 2 + 1 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13000001193 and 13000001202.

It is not an unprimeable number, because it can be changed into a prime (13000001213) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 722222281 + ... + 722222298.

Almost surely, 213000001211 is an apocalyptic number.

13000001211 is a deficient number, since it is larger than the sum of its proper divisors (5777778329).

13000001211 is a wasteful number, since it uses less digits than its factorization.

13000001211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444444585 (or 1444444582 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

Adding to 13000001211 its reverse (11210000031), we get a palindrome (24210001242).

The spelling of 13000001211 in words is "thirteen billion, one thousand, two hundred eleven".

Divisors: 1 3 9 1444444579 4333333737 13000001211