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20130003213 = 32313911171879
BaseRepresentation
bin10010101111110101…
…110111100100001101
31220221220011010010120
4102233311313210031
5312211240100323
613125251455153
71311561130005
oct225765674415
956856133116
1020130003213
11859a9533a1
123a995b74b9
131b8a5c4a08
14d8d687005
157cc39a5e3
hex4afd7790d

20130003213 has 32 divisors (see below), whose sum is σ = 28248729600. Its totient is φ = 12725989056.

The previous prime is 20130003211. The next prime is 20130003239. The reversal of 20130003213 is 31230003102.

It is not a de Polignac number, because 20130003213 - 21 = 20130003211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20130003192 and 20130003201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130003211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10712208 + ... + 10714086.

It is an arithmetic number, because the mean of its divisors is an integer number (882772800).

Almost surely, 220130003213 is an apocalyptic number.

20130003213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20130003213 is a deficient number, since it is larger than the sum of its proper divisors (8118726387).

20130003213 is a wasteful number, since it uses less digits than its factorization.

20130003213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20130003213 its reverse (31230003102), we get a palindrome (51360006315).

The spelling of 20130003213 in words is "twenty billion, one hundred thirty million, three thousand, two hundred thirteen".

Divisors: 1 3 23 69 139 417 1117 1879 3197 3351 5637 9591 25691 43217 77073 129651 155263 261181 465789 783543 2098843 3571049 6007163 6296529 10713147 18021489 48273389 144820167 291739177 875217531 6710001071 20130003213