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20010312303 = 319143979549
BaseRepresentation
bin10010101000101101…
…010010001001101111
31220122112221012001220
4102220231102021233
5311440114443203
613105334234423
71305605563632
oct225055221157
956575835056
1020010312303
118539332893
123a654b5a13
131b6b8786a7
14d7b80bc19
157c1b06653
hex4a8b5226f

20010312303 has 16 divisors (see below), whose sum is σ = 26881536000. Its totient is φ = 13239969120.

The previous prime is 20010312239. The next prime is 20010312341. The reversal of 20010312303 is 30321301002.

It is not a de Polignac number, because 20010312303 - 26 = 20010312239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010312353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211773 + ... + 291321.

It is an arithmetic number, because the mean of its divisors is an integer number (1680096000).

Almost surely, 220010312303 is an apocalyptic number.

20010312303 is a deficient number, since it is larger than the sum of its proper divisors (6871223697).

20010312303 is a wasteful number, since it uses less digits than its factorization.

20010312303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80182.

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

Adding to 20010312303 its reverse (30321301002), we get a palindrome (50331613305).

The spelling of 20010312303 in words is "twenty billion, ten million, three hundred twelve thousand, three hundred three".

Divisors: 1 3 191 439 573 1317 79549 83849 238647 251547 15193859 34922011 45581577 104766033 6670104101 20010312303