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20313131301 = 32471031313559
BaseRepresentation
bin10010111010110000…
…011100100100100101
31221102122201222122100
4102322300130210211
5313100130200201
613155352522313
71316243524101
oct227260344445
957378658570
1020313131301
118684262221
123b2a9b0399
131bb9522628
14da9b16901
157dd4c0886
hex4bac1c925

20313131301 has 48 divisors (see below), whose sum is σ = 30495928320. Its totient is φ = 13021426080.

The previous prime is 20313131291. The next prime is 20313131303. The reversal of 20313131301 is 10313131302.

It is a happy number.

20313131301 is a `hidden beast` number, since 20 + 31 + 313 + 1 + 301 = 666.

It is not a de Polignac number, because 20313131301 - 226 = 20246022437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20313131303) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5705760 + ... + 5709318.

It is an arithmetic number, because the mean of its divisors is an integer number (635331840).

Almost surely, 220313131301 is an apocalyptic number.

It is an amenable number.

20313131301 is a deficient number, since it is larger than the sum of its proper divisors (10182797019).

20313131301 is a wasteful number, since it uses less digits than its factorization.

20313131301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3846 (or 3843 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 20313131301 its reverse (10313131302), we get a palindrome (30626262603).

Subtracting from 20313131301 its reverse (10313131302), we obtain a palindrome (9999999999).

It can be divided in two parts, 203131 and 31301, that added together give a palindrome (234432).

The spelling of 20313131301 in words is "twenty billion, three hundred thirteen million, one hundred thirty-one thousand, three hundred one".

Divisors: 1 3 9 47 103 131 141 309 393 423 927 1179 3559 4841 6157 10677 13493 14523 18471 32031 40479 43569 55413 121437 167273 366577 466229 501819 634171 1099731 1398687 1505457 1902513 3299193 4196061 5707539 17229119 21912763 48021587 51687357 65738289 144064761 155062071 197214867 432194283 2257014589 6771043767 20313131301