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20030103211 = 29368362127
BaseRepresentation
bin10010101001111000…
…110001111010101011
31220200221011200002111
4102221320301322223
5312010201300321
613111322343151
71306236032236
oct225170617253
956627150074
1020030103211
118549520008
123a7005aab7
131b729b78a1
14d802c041d
157c37155e1
hex4a9e31eab

20030103211 has 4 divisors (see below), whose sum is σ = 20098465632. Its totient is φ = 19961740792.

The previous prime is 20030103193. The next prime is 20030103229. The reversal of 20030103211 is 11230103002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11230103002 = 25615051501.

It is an interprime number because it is at equal distance from previous prime (20030103193) and next prime (20030103229).

It is a cyclic number.

It is not a de Polignac number, because 20030103211 - 27 = 20030103083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20030103191 and 20030103200.

It is not an unprimeable number, because it can be changed into a prime (20030103241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34180771 + ... + 34181356.

It is an arithmetic number, because the mean of its divisors is an integer number (5024616408).

Almost surely, 220030103211 is an apocalyptic number.

20030103211 is a deficient number, since it is larger than the sum of its proper divisors (68362421).

20030103211 is an equidigital number, since it uses as much as digits as its factorization.

20030103211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68362420.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 20030103211 its reverse (11230103002), we get a palindrome (31260206213).

The spelling of 20030103211 in words is "twenty billion, thirty million, one hundred three thousand, two hundred eleven".

Divisors: 1 293 68362127 20030103211