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20020203003131 = 313494873799727
BaseRepresentation
bin1001000110101010100010…
…00101101001110011111011
32121212220122100222101211222
410203111101011221303323
510111002333432100011
6110325053154342255
74134261202511432
oct443252105516373
977786570871758
1020020203003131
11641957a740341
1222b407158a98b
13b22b87a57866
144d2da94a8119
1524ab88850ddb
hex123551169cfb

20020203003131 has 16 divisors (see below), whose sum is σ = 20767793356800. Its totient is φ = 19279201767840.

The previous prime is 20020203003107. The next prime is 20020203003133. The reversal of 20020203003131 is 13130030202002.

It is a cyclic number.

It is not a de Polignac number, because 20020203003131 - 226 = 20020135894267 is a prime.

It is a super-2 number, since 2×200202030031312 (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20020203003133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3368990 + ... + 7168716.

It is an arithmetic number, because the mean of its divisors is an integer number (1297987084800).

Almost surely, 220020203003131 is an apocalyptic number.

20020203003131 is a deficient number, since it is larger than the sum of its proper divisors (747590353669).

20020203003131 is a wasteful number, since it uses less digits than its factorization.

20020203003131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3800594.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20020203003131 its reverse (13130030202002), we get a palindrome (33150233205133).

The spelling of 20020203003131 in words is "twenty trillion, twenty billion, two hundred three million, three thousand, one hundred thirty-one".

Divisors: 1 31 349 487 10819 15097 169963 3799727 5268853 117791537 1326104723 1850467049 41109246413 57364478519 645813000101 20020203003131