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20010130023 = 3134319076257
BaseRepresentation
bin10010101000101100…
…100101101001100111
31220122112120221000210
4102220230211221213
5311440043130043
613105330310503
71305604204332
oct225054455147
956575527023
1020010130023
118539218944
123a65428433
131b6b813730
14d7b7a1619
157c1abc633
hex4a8b25a67

20010130023 has 32 divisors (see below), whose sum is σ = 29420810496. Its totient is φ = 12019327488.

The previous prime is 20010130013. The next prime is 20010130031. The reversal of 20010130023 is 32003101002.

It is a happy number.

It is not a de Polignac number, because 20010130023 - 29 = 20010129511 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20010129990 and 20010130008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010130013) 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 31 ways as a sum of consecutive naturals, for example, 3194911 + ... + 3201167.

It is an arithmetic number, because the mean of its divisors is an integer number (919400328).

Almost surely, 220010130023 is an apocalyptic number.

20010130023 is a deficient number, since it is larger than the sum of its proper divisors (9410680473).

20010130023 is a wasteful number, since it uses less digits than its factorization.

20010130023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8223.

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20010130023 its reverse (32003101002), we get a palindrome (52013231025).

The spelling of 20010130023 in words is "twenty billion, ten million, one hundred thirty thousand, twenty-three".

Divisors: 1 3 13 39 43 129 559 1677 1907 5721 6257 18771 24791 74373 81341 82001 244023 246003 269051 807153 1066013 3198039 3497663 10492989 11932099 35796297 155117287 465351861 513080257 1539240771 6670043341 20010130023