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20301430313 = 61332810333
BaseRepresentation
bin10010111010000011…
…110011111000101001
31221101211201111220102
4102322003303320221
5313034131232223
613154254035145
71316042211323
oct227203637051
957354644812
1020301430313
1186786a008a
123b26aa8ab5
131bb6c86778
14da834c613
157dc45d928
hex4ba0f3e29

20301430313 has 4 divisors (see below), whose sum is σ = 20634240708. Its totient is φ = 19968619920.

The previous prime is 20301430283. The next prime is 20301430333. The reversal of 20301430313 is 31303410302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 382906624 + 19918523689 = 19568^2 + 141133^2 .

It is a cyclic number.

It is not a de Polignac number, because 20301430313 - 210 = 20301429289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20301430333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166405106 + ... + 166405227.

It is an arithmetic number, because the mean of its divisors is an integer number (5158560177).

Almost surely, 220301430313 is an apocalyptic number.

It is an amenable number.

20301430313 is a deficient number, since it is larger than the sum of its proper divisors (332810395).

20301430313 is an equidigital number, since it uses as much as digits as its factorization.

20301430313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332810394.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20301430313 its reverse (31303410302), we get a palindrome (51604840615).

The spelling of 20301430313 in words is "twenty billion, three hundred one million, four hundred thirty thousand, three hundred thirteen".

Divisors: 1 61 332810333 20301430313